sen5241b
Reef enthusiast
I did a 50% in the middle of January. I spiked the make up water with cal and mag. I checked the water today and the cal is still well above 400, Ph is normal and my alk is 6 dkh. Trates are fine.
In the past it took about 6 weeks before cal dropped too low. In early January I took about a third of the rock out and dipped it in Hydrogen Peroxide which killed all algae including coralline. I think the cal has stayed high because there is not as much coralline in there eating up the cal. But this is the longest I've ever gone without a water change.
In the past it took about 6 weeks before cal dropped too low. In early January I took about a third of the rock out and dipped it in Hydrogen Peroxide which killed all algae including coralline. I think the cal has stayed high because there is not as much coralline in there eating up the cal. But this is the longest I've ever gone without a water change.