quote from one of my fresh water sites(flourish is non chelated )

Btw, it is mildly amusing to find out that Flourish is ferrous gluconate.
I sometimes take an iron supplement to prevent anemia, and I buy a local
'house brand' of ferrous gluconate or fumarate about $5Cdn (~$3+US) for
100 tablets containing 300mg Fe gluconate each. 300mg of Fe gluconate
contains 34.7mg of elemental iron, according to the bottle. This may be of
interest to anyone who wants to make their own Flourish-equivalent and has
access to a drugstore. Personally, I bought 250g of Fe-DTPA for $3 some
years ago, and I expect it to last me far into the new millenium.

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You just walked into Mother Nature's Thunderdome, friend. And in this analogy, you're not Max; you're the dead retard.