I noticed youve posted on my grow so I will return the favor. I only had 24/0 for the first few days and then I switched to 18/6.. In my opinion the plants use the energy collected during the light hours to power growth at night.. i notice every day that my plants are a little bigger after they come out of the dark cycle. I also only give my seedlings 3 pepsi-bottle caps full of water and then increase by one cap-full each week.. and in my opinion i think i could water a little less..