So as some of you know I had a devastating tank crash a couple months ago in both tanks and lost alot including all my fish, inverts. I had finally bounced back and my corals are growing good looking beautiful, I got some more sweet little fish buddies and I've noticed diatoms coming back and tonight I saw a balloon algae (Dino) I feel so anxious and scared this whole situation is going to happen again! So I really believe it's my phosphates that are so low like .02. How do you dose phosphates? I'm not sure about the diatoms, I cleaned the canister filter out a couple of days ago (wasn't bad) and the diatoms were even worse today brown film all over glass. I overfeeding for like 2 days, but haven't since.