tank smells

I have a 65g stocked with a Hoplo cat and a Raphael catfish, filtered by an AC110 and a sponge filter. The AC110 is growing a ton of plants out of it. I feed this tank every other day, about 6-8 Hikari Massivore (which I also feed to every other aquarium I own). Within about an hour of feeding...

Any tips on reducing aquarium water smell. I currently feed frozen shrimp, and change water 50% at best every few days. The smell is in the water I am assuming due to the food as these are large fish, there is no left over food. It doesn't smell too bad but there is a watery fish scent that I...

Hello, I have a 6 gallon Fluval Edge. It has been running for 2 years with a fire shrimp and live rock. Recently, the tank crashed, so I am having to start over. The tank reeks right now despite a 100% water change, new sponge media, carbon and good scrubbing. I kept the sand bed, the rocks, and...