Ravenes
Fish Crazy
30 gallon tallHm yeah that might be it. However, now the problem is how the fish. I recommend you do a water change and add the correct amount of antichlorinator, if none at all due to the abundance of it in the main tank. Remember that anti chlorinator doesn't remove chlorine, it just binds to it and makes it safe for aquatic life.
Now, how big is the tank? Stocking? The nitrates are still very concerning.
I have 8 albino corydoras
4 cherry barbs
5 white skirt tetras
2 thick lipped gourami