Having good clones starts with having healthy mother plants. We like to keep our mom stock at 0.9-1.0 VPD and 500ppfd with 18 hours of light, 6 hours of darkness. We follow the feed chart feeding the 4.6/3.1 Veg A/B grams per gallon ratio. We feed at 6.2 and aim for our runoff to come out 6.1. Any time we see our runoff EC spiking high we either increase runoff or lower the strength and increase runoff. It is very important to make sure your runoff ph stays on point for mother plants. Following these parameters gives you large, healthy branches to take clones from.