marineland emperor 400s

So I have two emperor 400 filters running in my 75 gallon tank. The most recent of the two filters has suddenly acquired a massive problem. I was going to to turn the filters back on, as I do weekly for my water changes. Filters purged back up all the way of course before turning back on. The...

Hello all! So after battling an algae bloom, and finally returning water to normal condition, I have taken some updated pics!! Let me know what you guys think. Tank contains 2 blood parrots, 1 green terror, 3 silver dollars and one pleco.