Okay, I'm not loosing any fish (despite it still being over stocked) and all the fish seem healthy. Cloudiness has gone away (although their is still a subtle mist) and after Christmas I'm going to see if the fish shop will take all my guppies and most of my Platies (might leave 2 females 1 male), and the two Sterbai Corydora I have, as they don't seem to be interacting with the 3 Albino Corydora at all!
After I replace my sand/gravel with substrate/black sand and add my FE CO2 system after Christmas, I'm going to get rid of most of the platys (maybe leave 1 male, 2 females), all of the guppies and the two Sterbai Corydora I have as they don't seem to interact with my 3 Albino Corydora I have who all love each other (if you look at my original post, all 3 lay on top of that rock when they aren't looking for food. It's pretty cute).
That'll leave me with 3 Albino Corys, 3 Platys and 1 Yoyo Loach.
What I want to do is add another 2 Yoyo Loaches (there used to be 4 of them, but 3 died over time my mum said) and add 8 Blue tetras (LFS sells them for £8 for 8) and I'm scratching my head about what else to add. I know my mum is terrified of snails invading the tank again, so maybe a couple of Assassin Snails, but do they count towards the inches per gallon rule?
I really wanted to get 3 Kuhli Loachs but I was out voted by my mum and brother, who deemed it "ugly"

Oh well, maybe a good thing. Don't want to over stock again.