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[APD] re: Ca gluconate
I asked this question once but didn't get much of a response, but since gluconate has come up again, I thought it was worth asking again....
I observed extreme chlorosis and poor plant growth in a tank that has an UG filter, despite the application of increasing quantities of Flourish. The poor plant growth was accompanied by frequent blooms of BGA and a filamentous green alga. Switching to a product containing Fe-EDTA cleared up the problem: the chlorosis vanished, plants grew rapidly, and the algae went away. I assume the algae was secondary to the poor plant growth, but is it possible that the root of the problem was related to the UG filter? Would Fe-gluconate be oxidized more rapidly than Fe-EDTA in the oxygen/bacteria-rich substrate of an undergravel filter?
nickplummer at nc_rr.com
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