Yesterday my daughter dropped a full tub of fish food into my 90 litre tank. I have done around 75% water change but the water is really cloudy. Is there any way I can get my tank back to normal?
Keep going water changes, more the merrier, also make sure you're using a gravel cleaner.
Might be worth while removing ornaments to get any loose flake.
Strip the tank of any plants and ornaments and use a gravel cleaner to clear the bottom and a net to clear the floating flake, and keep on doing water changes. Don't remove too much water though, and if posssible, use some carbon in the filter.
Carl