12-16-2010, 07:06 PM
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and would a tank with more plants require more flourish per dose or same dose more frequenlty througout the week?
I would not dose more than twice a week, and only approximately the recommended amount. This stuff is highly concentrated.
Obviously more plants will use more nutrients. But the light and other nutrients (carbon, hydrogen, oxygen, and more nitrogen) not in Flourish have to be in balance, and this depends upon the aquarium (source water, fish load, fish food, etc).
Overdosing with any fert might cause trouble not only for the plants but the fish. Micronutrients like iron, copper, zinc, manganese and nickel are heavy metals, and heavy metals are toxic to all life. Of course, the level has to reach that amount but why risk it? Flourish is intended as a once or max twice weekly "supplement."