I have guppy fishes and my tank is 16Lx8Wx10H inches I have no critters.
I have guppy fishes and my tank is 16Lx8Wx10H inches I have no critters.what kind of fish do you have? what are your tank parameters? what other critters do you have in your tank? with out knowing this information I would guess that one of your parameters are off and a water change is in order.
Thank you!with this info I would look at your ammonia and chlorine levels both are toxic to fish and can cause the kind of bubbles I understand you to be suffering from. if ammonia is the issue i would recommend a large water change 50% to 80% and treating tank with a water conditioner. If it is chlorine I would recommend a dechlorinating water conditioner as treatment.