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Member
i have to in my 58 gallon i love them it really reinacts the waves in the ocean. people keep saying they jam. and they do. mine do about once a month or atleast one of my two do anyways. all you have to do is get a screwdriver and pop off the bottom half of the power head after you remove the sponge filter. the mechanics in it are very very simple just a sprocket and a propellar. take these 2 objects out and wash them with warm water. put it back together, atach to glass, and plug in and BAM! it works like new. i would rather clean this and have it work once a month than have a PH that is fixed in place. hope this helps