don't use as much as the label says...... for my supplements (cal mag and such) I only use 10-15 mm per 3 gal.....in the beginning go 1/4 strength(ppms 250-350) for the first 10 days then increase to 1/2 (500-600 or so) for the next week, then full (900-1200 ppms ) these are the settings I use
forget that h2o2 stuff that dam near killed a plant of mine ...if I were you I'd just empty your water, make your 'tea' fill your buckets, ph to 5.3 ( it will go up the next day to 5.8 on it's own) adjust your light to the right height, and let er grow .... don't mess with the water cooler, co2, humidifiers, and all the other stuff it will mess you up for sure, too much to think about when something goes wrong ..as long as your room is comfortable for you it should be good for the plants after you get a grow or two under your belt then play with the 'toys' I use the 'KISS' formula..... keep it simple stupid hey it works!