i have a 12g eclipse tank with a fantail goldfish (approx 3 1/2 in) and a betta. now this tank ran fine for prob 6 months. well by fine i mean with constant water changes and stuff. but now the water is so cloudy it's like milk. no matter how much or how often i change it it gets the same way. i took apart the entrie, and i mean everything, tank and scrubbed it with a slt water solution, then rinsed it thouroughly and put it back together. throwing away the old gravel too. 1 week later it was the exact same. it's not cycling because i have 4 other tanks in the house that i've seen cycle and this isn't the same. now i've had an eclipse tank before that didn't end up well, i'm starting to think that the filtration is inadequate. but this has to be something more. I've never seen anything like this. i've added water clearing stuff with no effect, added cycle, nothing, no amount of water changed doesn anyhting more then dilute it for a day or two. I'm at a loss. My water here is fine, no nitrates out of the tape and the ph is fine. my other tanks flourish but this one seems doomed to dismantling. any ideas?