Danno666
New member
i have a filter guys ocean reef + 1 system, I have not changed filters yet. It has been about 1 year and the tds still reads 2ppm(this varries to 5 sometimes) into last stage and 0ppm coming out. The filters seem to be holding up, should I change them anyway or wait for tds meters to read higher numbers first?? The corals and fish are doing fine.