tank issues

When you're in a hobby long enough you're going to go through some ups and downs. A couple of my downs we're introducing a lemon peel angelfish in my 75 that completely decimated all my soft corals and LPS that I had been growing out for years. A couple of them never recovered and I had to drain...

I’ve noticed a white fuzz growing all over my tank, wondering what this is and if there is a way to get rid of it. The tank has been up for 2 years, it’s a 20 gallon. Checked all my parameters and they’re all good (salinity 1.025, temperature 80).