Fast Buds Orange Sherbet Auto Indoor 4" x 2" Grow - Mars Hydro FC 4000

The topped and the LST'd plants grew taller and bushier. I started LST on the topped plants on day 15. Every 2 to 3 days, I renewed the training stakes and gave them new LST. I only fed them once a week, this week it was on day 20 with 1ml/L of water. I also set the light to about 60% power on this day. I didnt knew it, but I think this is where my problems started. I didn't add calmag to my water which later turned out to be a problem, because I gave them very much light intensity and they were going through the calmag in my tap water very fast. Especially in midflower their calmag need was very high.