These are my Blue Dream cuttings at about 3 weeks. Running them in cocoa/gold and purlite. Flood and drain to reservoir system with 4 1000watt HPS General Hydroponics nutes, (Lucas Formula) PPM of 750 ph of 6.5 temp at 65-70 F In veg mode now... May be watering too much. this cocoa doesn't seem to drain very fast, first time using it. Have them at 2 minutes (how long it takes to drain from bottom) when lights come on 2 minutes 6 hours later and another 2 minutes 6 hours after that. Have looked through sick plants pics and don't see any pics of leaves curling like this. Then a few others are showing the yellow tips and edges. Any ideas guys?