So.... After 3 months still having phosphate issues.

When i change out GFO, first 1 to 2 days phosphates drop to an acceptable lvl of 0 to 0.02 ppm Po4

at day 4 its back to 0.08+!

i even changed GFO for 350ml on my 250L tank! didn't last a week!

brown algae on sandbed, hair algae on live rock is starting to form...

i had my tank at 0ppb phosphorus (hanna checker) for over a year, changing out GFO about once every 2 months. now i have to change GFO at least 1x per week. (costing me about 40 euro's of GFO every month!)

2014-10-29T12:59Z[GMT]