cloudy water question

[cmsbthebest]

Alright so today I did my normal water change, except it was a week later than I normally do it because I've been so busy lately. Everything i did was the same as I normally do, but right now (about 8 hours afterwards) my water is cloudy, which has never happened before. I don't have a test kit with me, so I cannot check the water peramiters right now, and I'm not gonna lie and say their fine, because I don't know if they are or not. Tomorrow I'm gonna go to my LFS and have them check my water and buy a test kit.

Does anyone have any idea what could be making my water cloudy?

 

[Celticdragon]

Need to know what kind of filtration you are using....

 

[cmsbthebest]

It's a fluval 204 in a 55 gallon aquarium, but there's probably only 42-43 gallons of water in there because I have a TON of gravel in the tank, and its not filled up to the top. I know I'd be better off with more filtration, but it has been fine for over a year now and I'm right about to get a larger tank, and I'm making sure I get amazing filtration for it.

 

[Celticdragon]

What did you do in addition to the water change?