Used to be a regular on here many years ago, had 4 tanks, one temperate, 3 tropical. Had kids so stopped keeping fish but want to get back into it. Want 2 tanks, one with a Betta, maybe a few tankmates, but not sure what will do well with the Betta, and also not sure what size tank to get. Also want a bigger tank, but not sure what we want in it yet other than a golden nugget pleco and some glowlight tetras. So just looking for advice for now please on what goes well together, and what size tanks are good, type of filtration eyc. In UK.