im thinking of getting: 17 Threadfin rainbows 1 Bolivian Ram 1 German Blue Ram 1 cockatoo Cichlid 5 Khuli loaches 4 otocinclus How many litres will they need? The man who owns his aquarium shop said that a tank with 125L should be fine. but after I aquascape it, there will be less litres in the tank. Im not convinced that it will be big enough. Any other opinions welcome as long as they aren't rude.