yes. the ammonia, nitrites, and nitrates. (forgot nitrites. don't check those anymore)
I recommend scarlet hermit crabs, astrea snail, turbo and sand-shifting snail(narcissus), and a cleaner shrimp
The scarlet hermits eats the uneaten food, astrea eats the small algae at the rocks and glass, turbo eats GHA on the rock, narcissus eats the diatoms and cleans your sand. The cleaner shrimp cleans up your fishes.
I would add one turbo every 20 gallons only. Others I will say add as many as you think is necessary. I would have more astrea and narcissus. Make sure not to get the blue leg hermits as they will kill other snails for the shell as oppose to scarlets who finds shells (that means you have to put some empty shells in the tank.
ATP,



