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    Watering Schedule for Seedlings in Rockwool

    I have some seedlings in rock wool, that sprouted about 72 hours ago. I've got the temp set to 77F, and they're under a 600W MH bulb set to 75% power. Humidity in the tent is stable at 40%. I have been giving them pH 5.9 water once a day. Should I be waiting until the top of the cube is dry...
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