my pygmy dwarf angel took care of mine real fast i mean like a weeks time he cleared every rock
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It does add to the statement that nutrients don't always cause algae blooms. In some of my old setups they had high nutrient levels and still no algae blooms. .
I think that ATS/refuge users could def be gaining an allelopathic benefit by using that much plant...nice call.
Because they need nutrients AND other factors (trace elements such as iron, places to grow without predation, a source of algae spores or however they reproduce, light, etc.). Take any individual one away and you do not get algae, even if you have all of the others.
It is certainly true that you can have high phospathe and nitrate without an algae problem, but that means one of the other factors is limiting the growth.
However, that does not take away from the fact that reducing any one of them (including nutrients) sufficiently will eliminate a problem algae that does exist.
*the reason I suspect allelopathic help, just a guess, was for the times ATS systems said they cured dinoflagellates compared to those using GFO that didnt, and the gfo having a known action on nutrients vs the ranging confounding aspects of phytochemical interactions. one form of nutrient restriction ought to be able to show what another does, imo.
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I read somewhere that one of the problems with algae in a new tank is because there isn't any other organisms on the surface of rock that blocks the growth of algae.
I've seen this for myself in my established tank, no algae grows on my rocks but a day later after cleaning the glass algae starts to grow on the glass.