so i went for it and ordered the 54litre tank online for my corys which are actually peppered corys i have no idea why i said bronze corys! so i can add salt to my molly tank. Ive also ordered a whole bunch of suitable plants for both tanks online.Also another question i read today that mollies arnt suitable for the 75litre aquarium there is this correct? i thought that it would be fine for them ? And i had a look at the AqAdvisor aquarium stocking calculator and it came up with my tank is 75% stocked? i have 7 mollies and the 2 platys in there does this sound about right because i thought that i might have 2 many in there for the size tank?