bunjiweb
mmmmmmmarines
Sorry but your tank IS a bit overstocked.... it doesnt matter how much research you've done because its obviously overstocked for a 20Gallon with just an Undergravel filter.
And yes, it could easily lead to the water turning milky, its whats usually a "Bacteria Crash" You get a high Ammonia reading, your bacteria trys to cope, can't and crashes then blooms, turning the water milky.... at least this is how i understand it to happen.
If you are positive it wasn't down to overstocking then have you contemplated that maybe your cat decided to take a pee in the tank? Thus causing high ammonia levels and again, crashing your bacteria?
I do suggest though you take peoples advice as well as your own ideas, move the betta out and the ADFs (You can get a 5-10Gallon tank and house them all together easily). Then your tank should be OK with good maintanence.
Ben
And yes, it could easily lead to the water turning milky, its whats usually a "Bacteria Crash" You get a high Ammonia reading, your bacteria trys to cope, can't and crashes then blooms, turning the water milky.... at least this is how i understand it to happen.
If you are positive it wasn't down to overstocking then have you contemplated that maybe your cat decided to take a pee in the tank? Thus causing high ammonia levels and again, crashing your bacteria?
I do suggest though you take peoples advice as well as your own ideas, move the betta out and the ADFs (You can get a 5-10Gallon tank and house them all together easily). Then your tank should be OK with good maintanence.
Ben