New grow, using a ro buddy purifier with a heavily used filter... I just add cal mag and hydroguard cuz I just hatched this baby... 3 gallon bucket only used 3 ml of cal mag and 4 of hydroguard! Before I had the 5 gallon bucket with 6 ml of calmag... I noticed the burn and switched out to a smaller bucket and halfed the calmag! Anyways is this just nute burn from too much calmag?
yeah minor burn. you dont need to add any nutes untill its out of the seedling stage my friend! no nutes untill 2 weeks minimum imo. if you MUST ... you can add maybe 100ppm total.. I would suggest b1 vitamin + micro nutes. You dont need cal mag supplement until flowering