My fish tanks smell! D:
I have two 1 gallons, 1 3(?) gallon, and 1 2.5 gallon. I do a 100% water change every other day because they get so stinky.
I just lifted up my 2.5 gallon's lid and I nearly died. A wave of stench hit me. It was horrible. It smells like something rotten.
One gallon #1 smells like some kind of weird mixture between burning plastic (there's no heater, but the water stays warm) and cat food.
One gallon #2 didn't stink at first, but started stinking ever since something got into the gravel and caused the water to cloud up after an hour. I removed the gravel since. I can't smell it right now to explain the smell, but I will post if I need to when my sister's out of her room. ("Hey, can I sniff Otis's tank?" AWKS.)
My 3 gallon smells like the 2.5 gallon, but not as strong.
I did water changes yesterday, so they're not due for one. I feed them about 90% frozen brine shrimp and 10% BettaMin flakes. I feed twice a day (shrimp in the morning, flakes at night) and fast once a week. None of the smells smell like the shrimp. (It's very distinctive.)
What could be causing the smell? How can I stop it from stinking so badly?