- Jul 10, 2019
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Has anyone had an under gravel suction grid installed in one of their ponds and how well did it work? I'm in the process of digging out the pond...I'm going for an active bog filter and came across this as a complimentary filtration system. I used one in my aquarium and was always pleased with how it worked but wondered if there were any draw backs. I've seen it used with an air pump to lift the water through the gravel bed but was thinking about a pump as I want to also have a waterfall/stream as well.