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I also run rdwc. I start the beans in rockwool cubes. What works for me is filling the water up past the bottom of the basket until the roots grow out of the basket, then keep water level about 2 inches below the basket from then on. Top feed works but hard to gauge the moisture in the rockwool...

People swear by it. I have used it but every Bloom boosters that I have used caused lock out issues. I get deficiencies within a few days. Too much of one nute and not enough of another throws things out of balance. Just don't get your NPK values too far out of wack and give it a try.

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