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My tanks been up and running for 21 months now. I've been cleaning the back glass twice a month. now and I am debating whether to stop and let Coralline algae grow on it. What do you all think?
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Yeah some tanks look incredible withIf you don't mind doing the work then keep doing what your doing. It looks great like that. There are benefits to an untouched back glass too though. Not only will it function as a biological filter, but it will provide food for things such as pods, snails, urchins, certain fish etc.

Now that's clean and very nice! Is your back glass painted at all?I prefer to keep my back panel clean, any algae on it is a real eye sore but my background isn't black. Beautiful mixed reef! Here is mine to show you my background, now to get rid of the frag rack.
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Now that's clean and very nice! Is your back glass painted at all?
Nice what a good idea.

