RDWC - Four plants in my system. 40 gallons total. I have a chiller, I use hydroguard and orca. FloraSeries Nutrients. Ppm 350 Water temp 65 Air temp 78 pH 5.7 Started as clones with large root balls , very healthy. Added to system 6 days ago. One is happy as a clam the rest are very droopy and curled leaves. They all have great root growth at this point and have just touched the water with one or several roots.