Thinking of getting a small one enough for just a few fish,how easy are they to look after and clean out?

Smaller tanks are harder to maintain than larger ones.

I’ve kept Marine fish for a few years, and the general rule is that the smaller the tank, the harder they are to keep.

I had a progression of tanks, and the bigger they got the easier it was to maintain the water quality, which is all-important for marine fish.

A good forum to check out for information can be found at Ultimate Reef

My tank, with a large sump system located in the garage.