Its acrylic you can drill it yourself.Beagle you can still have sand in the tank.I have all my flow aimed upwards.So if some detritus gets moved around it will be sent upwards towards the overflow.My pipes are about 4" off the tank bottom and I bought some OM fittings that allow you to aim the flow.My plumbing return lines are 1" and I don't get any sand storms.You should get a good clean up crew.This will help with any excess food.
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