New tank

Hi everyone,

Just after some advice. We recently set up our new tank and after a couple of days, the water is extremely cloudy and dark. No fish are yet in the tank. Just wondering if i need to do anything at the moment or just leave it and let nature do its thing.

Ive included a picture of tank and of the filter. Not sure if the filter is creating enough bubbles for the tank to thrive?

Any help would be great.

Looks like a bacteria bloom. You just have to let it do its thing.
The amount of flow needed in the tank will depend on the species of fish you want to keep. Some fish need very little flow, and some need a lot.