I have a coral qt and did a test today. Nitrates were at 15ish and po4 was at .33. So I did a water change, fairly large, 50%. Nitrates are sitting nicely at 10 now but po4 dropped to .32.
What else can I do? Only have inverts and corals in the tank, no fish. I run a Hob filter with sponge filter pads, I took those out and cleaned them. Between those pads I have some matrix. So not sure what else I can do, maybe add more matrix and remove one of the pads?
What else can I do? Only have inverts and corals in the tank, no fish. I run a Hob filter with sponge filter pads, I took those out and cleaned them. Between those pads I have some matrix. So not sure what else I can do, maybe add more matrix and remove one of the pads?