PROMISSORY NOTE

$250,000.00                                              Phoenix     Arizona  
                                              --------------------,-----------
                                                      City              State 
                             
                                                                 April 10, 1997
  
      FOR VALUE RECEIVED,  the undersigned  ("Borrower")  promises to pay to the
order of CAPITAL BANK, a Florida banking corporation  ("Bank"), at the office of
the Bank at 1221 Brickell Avenue,  Miami,  Florida 33131, or at such other place
as the holder hereof may from time to time  designate in writing,  the principal
sum of TWO HUNDRED FIFTY THOUSAND AND NO/100 DOLLARS  ($250,000),  together with
interest  thereon on the principal  amount from time to time  outstanding  at an
annual rate prior to maturity or default of nine and 50/100ths  percent (9.50%).
Interest  shall be computed on the actual  number of days elapsed and an assumed
year of 360 days. Borrower and all endorsers, sureties, guarantors and any other
persons  liable or to become  liable with respect to the loan  evidenced by this
Note (the "Loan") are each included in the term "Obligors" as used in this Note.
Said  principal  and  interest  shall be payable  in lawful  money of the United
States, on the dates and in the amounts specified below, to wit:

      (a) On May 10,  1997,  and on the  tenth  (10th)  day of  each  successive
calendar month thereafter,  through and including March 10, 2000, an installment
of principal and interest equal to __Five Thousand Two Hundred Sixty Seven__ AND
__73__/100 DOLLARS ($___5,267.73___) will be due and payable; and

      (b) On April 10, 2000, the entire  outstanding  principal  balance hereof,
together  with  accrued  but unpaid  interest  thereon,  will be due and payable
("Maturity Date").

      Borrower  shall  pay to Bank a late  charge  of five  percent  (5%) of any
payment not received by Bank within fifteen (15) days of its due date; provided,
however, if said fifteen (15) day period ends on a day other than a day on which
Bank is open for  business (a  "Business  Day"),  then the  aforedescribed  late
charge shall be payable if the payment is not received by the last  Business Day
within said fifteen (15) day period.

      This Note may be prepaid in whole or at any time without penalty.

      Borrower  shall pay all  amounts  owing  under  this Note in full when due
without   set-off,   counterclaim   deduction  or  withholding  for  any  reason
whatsoever.  If any payment  falls due on a day other than a Business  Day, then
such payment  shall  instead be made on the next  succeeding  Business  Day, and
interest shall accrue accordingly.  Any payment received by Bank after 1:00 p.m.
shall not be credited  against the  indebtedness  under this Note until at least
the next succeeding Business Day.

      If default  be made in the  payment of any sums  payable  pursuant  to the
terms of this Note,  or if default or other event  causing the  acceleration  of
this Note,  that certain  Promissory Note in the amount of $750,000 of even date
herewith executed by Aquagenix  Land-Water  Technologies,  Inc. ("Line of Credit
Note") or any other instrument or document  executed in connection with the Loan
(this Note,  the Line of Credit Note,  and all such  instruments  and documents,
including, without limitation, any guaranties,  agreements,  mortgages, security
agreements,  assignments and other documents securing this Note, are referred to
in this Note as the "Loan  Documents")  (an "Event of Default"),  then or at any
time  thereafter  at the  option of Bank,  the whole of the  principal  sum then
remaining unpaid  hereunder,  together with all interest accrued thereon and all
other sums owing  under the Loan  Documents,  shall  immediately  become due and
payable  without  notice and Bank shall be entitled to pursue any and all rights
and remedies  provided by applicable  law and/or under the terms of this Note or
any other Loan  Document,  all of which shall be cumulative and may be exercised
successively or concurrently. Upon the occurrence and during the continuation of
any Event of Default,  Bank,  at its option,  may at any time declare any or all
other   liabilities  of  any  Obligor  to  Bank   immediately  due  and  payable

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(notwithstanding  any contrary  provisions  thereof) without demand or notice of
any kind.  In  addition,  Bank  shall have the right to set off any and all sums
owed to any Obligor by Bank in any  capacity  (whether or not then due)  against
the Loan and/or against any other liabilities of any Obligor to Bank.

      From and after an Event of  Default,  and  regardless  of whether the Bank
also  elects to  accelerate  the  maturity  of this Note,  the entire  principal
remaining unpaid hereunder shall bear an augmented annual interest rate equal to
the  lesser of (i)  twenty-five  percent  (25%) per annum,  or (ii) the  highest
applicable lawful rate.  Failure to exercise any and all rights or remedies Bank
may in the event of any such  default  be  entitled  to shall not  constitute  a
waiver of the right to  exercise  such  rights or  remedies  in the event of any
subsequent  default,  whether of the same or different  nature. No waiver of any
right or remedy by Bank shall be effective  unless made in writing and signed by
Bank, nor shall any waiver on one occasion apply to any future occasion.

      In no event shall any agreed or actual exaction charged, reserved or taken
as an advance or  forbearance by Bank as  consideration  for the Loan exceed the
limits (if any) imposed or provided by the law  applicable  from time to time to
the Loan for the use or  detention  of money or for  forbearance  in seeking its
collection, and Bank hereby waives any right to demand such excess. In the event
that the interest  provisions of this Note or any exactions provided for in this
Note or any other Loan Document shall result at any time or for any reason in an
effective rate of interest that  transcends the maximum  interest rate permitted
by  applicable  law (if any),  then  without  further  agreement  or notice  the
obligation to be fulfilled shall be automatically  reduced to such limit and all
sums received by Bank in excess of those lawfully  collectible as interest shall
be applied  against the principal of the Loan  immediately  upon Bank's  receipt
thereof,  with the same force and  effect as though  the payor had  specifically
designated  such extra sums to be so applied to principal and Bank had agreed to
accept such extra payment(s) as a premium-free prepayment or prepayments. During
any time that the Loan bears  interest  at the maximum  lawful rate  (whether by
application  of  this  paragraph,   the  default  provisions  of  this  Note  or
otherwise), interest shall be computed on the basis of the actual number of days
elapsed and the actual number of days in the respective calendar year.

      The Obligors hereby  severally:  (a) waive demand,  presentment,  protest,
notice of dishonor,  suit against or joinder of any other person,  and all other
requirements  necessary to charge or hold any Obligor liable with respect to the
Loan;  (b) waive any right to immunity  from any such action or  proceeding  and
waive  any  immunity  or  exemption  of any  property,  wherever  located,  from
garnishment,  levy, execution, seizure or attachment prior to or in execution of
judgment,  or sale under execution or other process for the collection of debts;
(c) waive any right to interpose any set-off or  non-compulsory  counterclaim or
to plead laches or any statute of limitations as a defense in any such action or
proceeding  and waive (to the  extent  lawfully  waivable)  all  provisions  and
requirements  of law for the benefit of any Obligor now or  hereafter  in force;
(d) submit to the  jurisdiction  of the state and federal courts in the State of
Florida for purposes of any such action or proceeding;  (e) agree that the venue
of any  such  action  or  proceeding  may be laid in Dade  County,  Florida  (in
addition to any county in which any  collateral  for the Loan is  located),  and
waive any claim  that the same is an  inconvenient  forum;  (f)  stipulate  that
service of process in any such action or  proceeding  shall be properly  made if
mailed by any form of registered or certified  mail (airmail if  international),
postage  prepaid,  to the  address  then  registered  in Bank's  records for the
Obligor(s) so served, and that any process so served shall be effective ten (10)
days  after  mailing;  and (g)  agree  that the  death  or  mental  or  physical
incapacity of any Obligor who is a natural person,  or the dissolution or merger
or  consolidation  or  termination  of the  existence  of any Obligor  that is a
business entity (or if any person controlling such Obligor shall take any action
authorizing or leading to the same), shall at Bank's option, which option may be
exercised then or at any time thereafter,  result in the Loan being then due and
payable in full.  No  provision  of this Note shall limit  Bank's right to serve
legal  process in any other manner  permitted by law or to bring any such action
or proceeding in any other competent jurisdiction. The Obligors hereby severally
consent and agree that,  at any time and from time to time without  notice,  (i)
Bank and the  owners(s) of any  collateral  then  securing the Loan may agree to
release,  increase,  change,  substitute  or  exchange  all or any  part of such
collateral,  and (ii) Bank and any person(s) then primarily  liable for the Loan
may agree to  renew,  extend  or  compromise  the Loan in whole or in part or to
modify  the  terms  of the  Loan in any  respect  whatsoever;  no such  release,
increase, change,  substitution,  exchange,  renewal,  extension,  compromise or
modification  shall  release or affect in any way the  liability of any Obligor,
and  the  Obligors  hereby  severally  waive  any and all  defenses  and  claims



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whatsoever  based thereon.  Until Bank receives all sums due under this Note and
all other Loan Documents in  immediately  available  funds,  no Obligor shall be
released from liability with respect to the Loan unless Bank expressly  releases
such Obligor in a writing  signed by Bank,  and Bank's release of any Obligor(s)
shall not release any other person liable with respect to the Loan. The interest
rate charged is authorized by Florida Statutes, Chapter 665.

      The  Obligors  jointly  and  severally  agree to pay all  filing  fees and
similar  charges  and all costs  incurred by Bank in  collecting  or securing or
attempting to collect or secure the Loan,  including attorney's fees, whether or
not  involving   litigation  and/or  appellate,   administrative  or  bankruptcy
proceedings.  The Obligors  jointly and severally  agree to pay any  documentary
stamp  taxes,  intangibles  taxes or other taxes  (except for federal or Florida
franchise or income taxes based on Bank's net income) which may now or hereafter
apply  to this  Note or the  Loan or any  security  therefor,  and the  Obligors
jointly and severally agree to indemnify and hold Bank harmless from and against
any liability, costs, attorney's fees, penalties,  interest or expenses relating
to any such taxes,  as and when the same may be incurred.  The Obligors  jointly
and  severally  agree to pay on demand,  and to indemnify and hold Bank harmless
from  and  against,  any and all  present  or  future  taxes,  levies,  imposts,
deductions,  charges and withholdings imposed in connection with the Loan by the
laws or  governmental  authorities of any  jurisdiction  other than the State of
Florida or the United  States of  America,  and all  payments to Bank under this
Note shall be made free and clear thereof and without deduction therefor.

      This Note shall be governed by, and  construed  and enforced in accordance
with, the laws of the State of Florida,  except that federal law shall govern to
the extent that it may permit Bank to charge, from time to time, interest on the
Loan at a rate higher than may be permissible under applicable Florida law.

      Any  provision of this Note which is prohibited  or  unenforceable  in any
jurisdiction  shall, as to such  jurisdiction  only, be ineffective  only to the
extent  of  such  prohibition  or  unenforceability   without  invalidating  the
remaining  provisions hereof or affecting the validity or enforceability of such
provision  in any  other  jurisdiction.  To the  extent  that the  Obligors  may
lawfully  waive any law that would  otherwise  invalidate  any provision of this
Note,  each of them hereby  waives the same,  to the end that this Note shall be
valid and binding and  enforceable  against each of them in accordance  with all
its terms.

      If this Note is signed by more than one person,  then the term  "Borrower"
as used in this Note shall refer to all such persons jointly and severally,  and
all  promises,   agreements,   covenants  waivers,  consents,   representations,
warranties  and other  provisions  in this Note are made by and shall be binding
upon each and every undersigned person,  jointly and severally.  The term "Bank"
shall be deemed to include any subsequent  holder(s) of this Note. Whenever used
in this Note, the term "person" means any individual,  firm, corporation,  trust
or other  organization or association or other enterprise or any governmental or
political subdivision,  agency,  department or instrumentality thereof. Whenever
used in this Note, words in the singular include the plural, words in the plural
include the singular,  and pronouns of any gender include the other genders, all
as may be appropriate.

      Time shall be of the essence with respect to the terms of this Note.  This
Note  cannot  be  changed  or  modified  orally.   Bank  shall  have  the  right
unilaterally  to correct  patent  errors or  omissions in this Note or any other
Loan Document.  Except as otherwise required by law or by the provisions of this
Note or any other Loan Document,  payments  received by Bank hereunder  shall be
applied first against expenses and indemnities, next against interest accrued on
the Loan,  and next in reduction  of the  outstanding  principal  balance of the
Loan,  except  that from and after any default  under this Note,  Bank may apply
such  payments  in any order of  priority  determined  by Bank in its  exclusive
judgment.  Borrower shall receive  immediate  credit on payments only if made in
the form of either a federal wire  transfer of cleared funds or a check drawn on
an  account  maintained  with  Bank  containing   sufficient   available  funds.
Otherwise,  Borrower  shall receive credit on payments  after  clearance,  which
shall be no sooner than the first Business Day after receipt of payment by Bank.
For purposes of determining  interest accruing under this Note,  principal shall
be deemed  outstanding  on the date payment is credited by Bank.  If any payment
required to be made pursuant to this Note is not received on the due date,  Bank
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shall have the right, at its election,  to charge any of Borrower's  accounts at
Bank  with the  amount of such  payment.  Except as  otherwise  required  by the
provisions of this Note or any other Loan  Document,  any notice  required to be
given to any Obligor shall be deemed sufficient if made personally or if mailed,
postage  prepaid,  to such Obligor's  address as it appears in this Note (or, if
none  appears,  to any  address  for such  Obligor  then  registered  in  Bank's
records). Bank may grant participations in all or any portion of, and may assign
all or any part of Bank's rights under, this Note. Bank may disclose to any such
participant or assignee any and all information  held by or known to Bank at any
time  with  respect  to any  Obligor.  If  Borrower  or any other  Obligor  is a
partnership,  then all  general  partners  thereof  shall be liable  jointly and
severally  for all  obligations  under  this Note and for all  other  covenants,
agreements,  undertakings  and  obligations  of Borrower in connection  with the
Loan,  notwithstanding  any contrary  provision of the  partnership  laws of the
State of  Florida.  All of the terms of this Note shall  inure to the benefit of
Bank and its successors and assigns and shall be binding upon each and every one
of the Obligors and their respective heirs, executors, administrators,  personal
representatives, successors and assigns, jointly and severally.

      BANK AND BORROWER HEREBY KNOWINGLY,  VOLUNTARILY AND  INTENTIONALLY  WAIVE
THE RIGHT  EITHER MAY HAVE TO TRIAL BY JURY IN RESPECT TO ANY  LITIGATION  BASED
HEREON,  OR  ARISING  OUT OF,  UNDER OR IN  CONNECTION  WITH  THIS  NOTE AND ANY
AGREEMENT  CONTEMPLATED TO BE EXECUTED IN CONJUNCTION HEREWITH, OR ANY COURSE OF
CONDUCT, COURSE OF DEALING,  STATEMENTS,  (WHETHER VERBAL OR WRITTEN) OR ACTIONS
OF EITHER  PARTY.  BORROWER  ACKNOWLEDGES  THAT THIS  WAIVER OF JURY  TRIAL IS A
MATERIAL  INDUCEMENT TO THE BANK IN EXTENDING  CREDIT TO THE BORROWER,  THAT THE
BANK WOULD NOT HAVE  EXTENDED SUCH CREDIT  WITHOUT THIS JURY TRIAL  WAIVER,  AND
THAT BORROWER HAS BEEN  REPRESENTED  BY AN ATTORNEY OR HAS HAD AN OPPORTUNITY TO
CONSULT  WITH AN  ATTORNEY  IN  CONNECTION  WITH  THIS  JURY  TRIAL  WAIVER  AND
UNDERSTANDS THE LEGAL EFFECT OF THIS WAIVER.

      WITNESS the due execution hereof as of the date first above written.

                                    AQUAGENIX, INC.

                                    By: /s/ Andrew Chesler
                                       ---------------------------------------
                                    Print Name: Andrew Chesler
                                               -------------------------------
                                    Title: President
                                          ------------------------------------
STATE OF Arizona    )
                    ) SS:
COUNTY OF Maricopa  )

      I HEREBY CERTIFY that on this day,  before me, an officer duly  authorized
in the State aforesaid and in the County aforesaid to take acknowledgments,  the
foregoing instrument was acknowledged before me by Andrew Chesler, the President
of AQUAGENIX LAND-WATER  TECHNOLOGIES,  INC. a Florida  corporation,  freely and
voluntarily  under authority duly vested in him/her by said corporation and that
the seal affixed thereto is the true corporate seal of said corporation.  He/She
is  personally  known  to me  or  who  has  produced  __Driver's Licence____  as
identification.

      WITNESS my hand and official  seal in the County and State last  aforesaid
this _10th_ day of April, 1997.

                                 /s/ Maria Rosana Chavez
                                 -----------------------------------------------
                                 Notary Public

                                 Maria Rosana Chavez 
                                 -----------------------------------------------
                                 Typed, printed or stamped name of Notary Public
My Commission Expires:

August 17, 1997
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