Tank Looks A Bit Cloudy?

[gh74]

I did a %75 WC a few days ago and it seems after 3-5 days the water looks a little cloudy for some reason,the fish get fed 1-2 time a week,does anyone have any idea why my tank goes like this?

 

[techen]

Bacteria bloom! :V

 

[gh74]

Just it seems anytime i do a WC this happens,so what can the cause of this be,and how do i go about sorting it Darren.
 
graham

 

[Lunar Jetman]

What size is your tank and how often are you changing the water? 75% is quite a lot to do for a regular change when there is nothing wrong.

Oh and how long have you had the tank set up/cycled for?

 

[gh74]

Hi jetman,i only changed %75 because the bit of cloudiness was really bugging me,it was clear for 3-5 days now its back to the same again,i am going to do %50 take all my wood out power hose it vacuum the substrate,and see how that goes,i have a juwel rio 240,just waiting on my 8foot tank then i be transferring the fish into it,its been running 5 months and its cycled,here is the parameters
 
PH 7.6
HR 7.4
AMMONIA 0
NITRITE 0
NITRATES 10