I'm not a new grower as I have done a few before but growing in coco and using GH nutrients is new so thought I'd post in here. After hours of browsing on the net I've noticed a lot of people saying the feeding schedule for the drain to waste on the GH website will burn my baby's?! Has any got a feeding schedule that works well that's easy to understand? I'm using the softwater series and I've heard I'll need to get calmag? Also I'll add I've no clue what this ppm is so how can you measure that and will understanding this benefit me? Cheers