I am having continuous problem with my 75 gallon FOWLR
tank that has been running for a year and half. Recently i added Chemi-clean to get rid of my red algea. This product works like a charm, but after the 48 hours i do a 20% water change with RO
water and a brown algea covers everything. I notice it dies down after a couple of days but what could be the cause of this? Initially when i started the tank i did use tap water but i have done enough water changes using RO
water that this shouldnt even be an issue.
I read that a cause of the brown algea in the tank is phosphates. Is this true?
I have a dogface puffer in the tank and he eats shrimp/prawns. On the bag of the frozen food it mentions that the products have phosphates in it, could this be a continuous problem causing the brown algea? I feed him about half a shrimp/day and clean the remaining pieces out the next day. If so could anyone recommend any other frozen food that does not contain phosphates.
So all in all i am dealing with a brown algea issue that has gotten worse after my water change, but is still present when water changes have not occured.
Not only that i am dealing with hair algea all over my live rocks, its not a big nuisance but i would like to trim it down. Lighting is down to 8 hours/day and i havent tested for Nitrates or phosphates, but i am thinking of adding Phosban and a Nitrate sponge to see if it effects it at all. What do you think??