I started up my 240 gallon almost 4 weeks ago and it' starting to grow brown algae around the tank. The tank is in my living where it gets a lot of light. But no direct sunlight. I don't overfeed the fish. Feed them once in the morning and once in the evening time. I was wondering whats the best tool to clean the tank without scratching the inside of the tank. I have read mixed reviews about the magfloats. If it's something with a handle. Do any of you know a handle that reach with ease the front, back and sides of the tank without scratching it. Please help. Thanks