[forstral]

I checked the nitrates today and they appear to be zero but the diatom is in full bloom, my snails and crabs can't keep up. I have lost 1 blue leg and 1 scarlet but everything else is accounted for, my coralline algae is turing white. What am I doing wrong? Shouldn't I be getting more purple covering the rock instead of white? Thanks, dKH was 10 and ph was 8.2. I think calcium was between 360 and 400, still trying to learn how to read the test. Seems a little tricky to determine if the color is purple or blue, it is supposed to be blue; correct? Anyway, I added a 1/4 teaspoon of Kent turbo calcium; not sure if that was enough to bring the calcium level up to 500ppm.

Is there anything else I need to do???? Trying not to mess up.