I started noticeing for a couple of days now my tank water turning green, it's nothing extreme. I did a water test and everything reads fine 0nitrite, about 10nitrate and 0 ammonia.... The tank has be setup now for about 8-9 months so I'm assuming it's just signs of maturing... the gravel that was WHITE is now GREEN but it's not hairy, and I have 1 pleco in there but I still have to wipe down the town almost once a week on the glass b/c it builds up green alge so fast on the glass withen one month you it's unbelivable. But that's not my concern I have noticed that the top of the water has green alge floating around "A LOT." Was just wondering if this is fine, my fish that I have in there are fine and healthy but just want to know what you think.