I just wanted to step in here and say hello Im about to run my first rdwc myself and you sir just saved me ALOT of money and headache so thank you everything I have been reading says this is the best system for yields hands down if done CORRECTLY but if you miss a step it lose everything. I do plan on running 1k HPS cooltubes per plant for 4 plants an I have the cash for a cooler already also Im so ampd.. tuurrrnnnup