Seedsman Zkittlez Auto first RDWC grow

Good week, just building bud and trying to make sure the tops don't get burned. PPM at end of week: 1380 Water temp: 71 Air temp: 72 pH: 5.8 Height: 44 Distance from lamp: 8 Day 71 New week and we’ve started it off with a water change. Everything looking good so far. Day 73 Had to add some solution today, added 1.5 gallons. Everything looking good except it looks like one of my plants may grow into the lights. Day 75 Added 2 gallons of mix today into the reservoir. I’ve also added a dehumidifier in the room, trying to keep up with summer and an AC unit is tough. The plants have filled out again and look great. Day 76 Added another gallon today, that makes 4 over the last 6 days. At this rate I will probably change water on Friday (3 days from now). Day 77 Eleven weeks old! Added one more gallon to the reservoir. Bud formation is continuing, everything looking healthy.