Ginger punch autoflower

MAY 20th All are out of the soil as of today, May 20th, I Gave them ph'd water at 6.5 when they were put in the soil and then a little water at 6.3 once they all sprouted (2 days after). I'm considering the day that they all were sprouted as day 1 (May 20th) Light used is the HLG 550 V2. it's dimmed to around 40-50% for the first week and sitting at 29 inches above the plants. MAY 27th I noticed at around day 3/4, that the plants were stretching pretty badly. the light was too high with the power too low. I lowered the light to 26 inches and moved it to 90% power. the stretching stopped after that. they seem to be doing well after 7 days (May 27th) Watered the plants every few days and only gave them about 100ml each time Gave them their first feed on day 7 (May 27th). calmag 2ml/g micro 1ml/g Gro 1ml/g Bloom .5ml/g ppm of feed going in was 326. ph was 6.3.