04-27-2011, 03:00 PM
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Originally Posted by redchigh
You could always give an extra dose of flourish one time and see if it helps.
Byron, didn't you say you do that from time to time?
I was using Flourish Comp twice weekly. But one must remember that I have very soft water, so calcium, magnesium, sulphur which occur in most medium/hard tap water is totally missing in mine. I am now done to once a week, as I am experimenting a bit.
The tank with Flourite substrate is noticeably getting brush algae. This is a bit odd, as both Flourite and Eco-complete manufacturers claim this will not occur. As of this week, I am not fertilizing with liquid in this tank.
I am also trying magnesium sulfate (Epsom Salt, which is pure magnesium and sulphur) in two other tanks and this does seem to have had good results in now 3 weeks. Flourish only once in these tanks too. Back in the 1980's, with similar very soft water, I only used Epsom Salt [this was suggested in the plant column in FAMA back then] and had very good plant growth with less light than I now use and no other ferts. One has to be careful not to overdose magnesium, as this causes iron deficiency and other problems.