01-25-2020, 01:33 PM
Join Date: Apr 2005
Location: Brentwood, CA, USA
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| | Re: All you need is Love...and IRON! A must see...
Originally Posted by Gerald
Sounds like iron was the MISSING nutrient in your case. Plants DO still need N, P, K, Ca, Mg, etc. Without a suitable mix of those, adding more Fe wont help. The others may be plentiful in your water and/or fish food. "Not needed" in your particular tank is not the same as "plants don't need ..."
And, algae also need iron to grow. Iron in a bioavailable form has to be dissolved in water, so it is Fe+++ or Fe++, and chelated iron does that, too. One possible way to make life difficult for for algae is to keep bioavailable iron away from algae - keep it in the substrate instead of in the water. I'm dreaming up ways to experimentally demonstrate this.