Hi I have a 26 Gallon reef tank with a good amount of corals as well as fish. After a 1-2 years of owning the tank, every water change I'd siphon a little sand out. Now it has seem to have added up and I seem to have a low amount of sand since I could see the glass bottom in some areas although I spreaded the sand out... My water seems to be fine and everything but what should I do? I'm a little worried because I know the sand bed is vital in a reef tank.
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