Green Water

[dougmich]

I am hoping for some advice on eliminating phosphates out of my marine tank. It a fish only tank 130g with about 55#'s of base rock, a berlin protein skimmer. My nitrates are around 10ppm, however my phosphates are around 10ppm as well ( My test kit will only measure this high ). I seem to have narrowed down my PO4 problem to my fish food, as the water going into to my tank measures 0.00ppm PO4 before entering my system. I have tried all kinds of PO4 eliminators to rid the tank of PO4, a full and complete water change, and the green water keeps coming back. Could the rock be a source of ongoing PO4 in the tank as well as the feeding. Have cut back on that as well, however the fish need to eat. Any help please post.

Thanks
Doug

 

[Syffe457]

You cant try adding any kind of calurpa, or other macro algae's, you could also try true marine plant.