Tested my water for the first time in a while. No measurable ammonia, nitrite, nitrate or phosphate. Not unusual, I have rarely had any measurable results with my tank since I want to a 90 gallon 6+ years ago; but there is clearly nitrates and phosphates that are at least being used up in the hair algae that is covering my liverock and hampering my coral growth / expansion. I'll have to check the age of my test kits too, they are Salifert and roughly 3 years since I purchased them from P.A. online.
I tried purigen and it seems to work for phosphates. That and the only other big change before the algae went away was ro/di. I have dirtied my purigen and re-charged it for another use since putting it in the sump.
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