Ive just got some 40lbs of LR from a crashed tank and rock thats been sitting outside for a few weeks which had a ton of algae on it. Rinsed/scrubbed it off and had it sit in a vat for a few days with circulation and a heater. already mirky and somewhat smelly. The question is really if light should be added. Some say no so that any old algae doesnt regrow. On the other hand if you introduce light you may induce some good growth on something, perhaps some coraline, and good bacteria in order to speed up the process. I figure perhaps added a ball of cheato under the light might really suck up any PO4 and nutrients.
Any opinions?
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