we have got a standard 37 litre tropical tank set up with plenty of fish, a bubble tube thing and a big filter. All is fine and well except over the last few days the sides are going green. Our algae eater fish isn?t bothered anymore and it looks horrible.
Is there a treatment I can put in the water to get rid of the green? (only on the tank sides, water is clear, fish healthy)
Can I get a pan scrub (clean of course) and just scrub at it while fish are in there? Is this better that taking them out and stressing them more? Should I do a water change and scrub while half empty?
Please advise me - don?t want to kill off DD?s treasured fish as each time one dies (thankfully not often) she is inconsolable.