Update: Cleaned the walls and gravel in the tank, 50% water change, changed the filter the day before yesterday. Received my Amano shrimp, nerites, and White Clouds yesterday. Acclimated them slowly. Split them between the two tanks.
5 of the ten Amano shrimp were DOA on arrival. The rest died one by one in both tanks. I lost one White Cloud in each tank. Everything else is fine so far.
I need something to help me control my algae. It just grows way too fast.