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    Optimize plant feeding

    If you have a 4 gallon res and your PPMs are 1100. You wait till the plants use 1 gallon of water check PPMs if they are still 1100 you are spot on. If they are 1200 you are giving too much. If they are 1000 they could use a bit more. Then of course when you top off the resevoir with plain...
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