I did 100% water change on my 10 gallon, filtered tank. It's been less that 24 hours and the tank is already cloudy to the point where it's hard to find the fishes!! What's happening?!? 1 betta, 2 neon tetras, and 2 cory cats. I'm getting more fish and a larger tank next week, to allow for the cories and bettas to school, but I'm afraid the same thing is gonna happen?! I did a double dose on stress coat because I just added new fish, could that be the issue? Help!