Like JW said, the medium makes a real difference. If the water is dripping onto the RW then something like the 3 times is allright, but if using hytro ton, or lava rocks without RW then a 24 7 can work great.\
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BlueBear Reviewed by BlueBear on . Top feed schedule? How "often" and how "long" should a top feed system go off? Lets say in a hydrofarm type system, using rockwool in hydroton. Rating: 5