I'm glad to hear that the plant's are rebounding,but i'm going to have to disagree with you about the necessity of leaching the rockwool of the lime and calcium,after i stabilize and set the rockwool up i adjust the(reservoir) solution to 5.5,and recheck after the first flood cycle is complete,and there alway's is a slight rise of 0.3-0.7 at which time i re'adjust the "ph" lower to about 5.8 to where it usuaully stay's,then i check the block's with a soil "ph"tester at where their around 6.1-6.3 and there the reading's will be consistant throughout the rest of the grow,i flood my system at 8hr interval's.each cycle is a1/2hr.at the rate of hand watering you're using, it will be sometime before the medium is stable,in the meantime you are risking a secondary nute lockout,but if the method you use is working out for you by all mean's, then use it.as far as you're lighting goe's,I also use a 430WT hps that i keep at 12" above the canopy,with a overhead exhaust and a occilating fan between the plant's and lamp,sorry if i sounded critical,i did not mean to,just a simple disagreement,welcome to the forum and keep us posted on you're grow....good luck....bonbon
bonbon Reviewed by bonbon on . Can too much light hurt seedlings? I started seeds 3 weeks ago in rockwool cubes. After sprouting, I used a weak nutes solution for the seedlings as recommended by the manufacturer (4-6-7 @ 1 tsp./gal. of water), kept seedlings at around 1- 2 inches from floros lamps, 24 hours /day except on sunny days when they were moved to the window sill. I fed and watered the plants by hand, flushing the rockwool with nutes solution at least once per week and watering as needed with just plain water between feedings. At two weeks old and Rating: 5