Don't mix your chemicals. While some are designed to be compatible
(such as SUPERthrive + fertilizer), others work only in a narrow pH range.
Some fungicides and pesticides, for example, are carefully buffered so
that they'll work when you drop them into solution (i.e., add them to
water). All that goes down the drain when you throw in fertilizer (which
may be quite acidic) or another pesticide that is buffered to work at
another ph.
The other problem is that pesticides are sometimes created as a
particular chemical salt; the addition of other chemical salts (such as
those found in fertilizer, or another pesticide) may cause incompatibility
issues- it may cause one compound to precipitate, rendering it useless,
inactivating it, or possibly even causing it to be more toxic to humans or
plants.

-AJHicks
Chandler, AZ

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