lights are on 12 hrs a day,but i think i found the problem, now to control it, the problem is that i didn't rinse my pfs before putting it in and it probably put extra silicates into the water i didn't rinse BC my friend told me i didn't have to (hes uses it in all his tanks but his salt)..... so i know i can get that out with more frequent/ routine water changes, but in the mean time i need something to control the stuff, whilst i do my part