Okay thanks for the advice everyone. I think I have made my decision.
.10 neon tetras
.10 black neon tetras
.8 bronze corydoras
.2 nertile snails
Are these Okay? Thanks
Snails are like marmite. I hate them, even just 2 can leave your entire tank coated in little white snail eggs that need to be scraped off with a razor.
If you want an alternative consider this.
10 x dwarf pencil fish (top dwellers)
10 x black neons (mid dwellers)
8 x bronze or panda corys (bottom dwellers)
When the tank is starting to get a coating of algae consider otocinclus instead of snails but you'll need a good bunch of them.
What almost all novice fish keepers do is take 3 of those, 1 of those, 2 of those and 5 of those at the fish store and then wonder why they all hide or fight and die in a month. If you can return one variety of neons and stick with the other as you can have a much larger school of then and they behave differently.
The behaviour of 10 tetra is considerably different to just 5. Now consider how 30+ of them would behave. You will see this tight close schooling and directional swimming that, with black neons from distance, almost looks like clouds floating around the tank.