I have a newly set up aquarium thats been cycling for about 2 weeks with a couple of small fish and live plants. Since yesterday there are a lot of brown patches on the leaves and the back of the tank has a coating of green algae. Should I get some sort of algae eater fish yet as it probably has not finished cycling. If so what one would be good for a uk 94 litre tank. 50 x 50 x 40 cm Thanks