Airdome should run continuously not every 15 minutes and it should mirror your light schedule. I’ve run without the airdome in both a 50/50 and 70/30 mix with no problems but roots are massive around the dome when I do use it. If you’ve been bottom feeding for a few weeks you shouldn’t top feed because you’ll just push the toxic salts to your roots. Don’t bother testing or worrying about ph at the pot, the res ph is the key. Ideal res ph is 5.8, 5.2 is too low. Your problems are most likely not following instructions to wait until leaves reach edge of pot. Pay attention to new growth not old leaves, if new looks good you don’t want to be adding extra stuff just because a leaf or two are yellow. I also use ro water with a & b and calmag in coco. I use 5ml per gal of calmag the whole grow, first week or two I’m using a/b at 10ml/g, going up to 14ml/g in flower. From early to mid flower I’m adding big bud for a couple weeks, then pk boost one week, then overdrive til finish. Your plants look good just avoid any extra stuff you may be thinking of
