1st Grow Ever

Cut hole at top of door to room where tent is located so I could put a window fan in it, I have this blowing out the hot grow room air to try and fight off the rising spring temps. Sun - Added about 1 1/3 tsp of cal/mag to todays PH 6.5 water. Tue - Watered plants with 6.5 PH water, also checked PH of effluent water, it dropped about .2 from each plant. Water may still be a little acid, which could have been my problem with leaves. Next watering I will bump the PH up to 7 of the feed water to try and pull it up a little. I trimmed the dead leaves from the plants so I can watch the progression better. Thur - Fed plants per schedule with 6.5 PH, going light at 1/2 Canna's chart since saw signs of burn after feeding last week. Two tall plants looking strong even after pruning damaged leaves. Bushy one had 1200ppm effluent, may need some extra water on next watering to help push more of the salts out. The dwarf is now as tall as the busy one, seems to be recovering although still needs some TLC. Sun - Water with plain tap at 6.4 PH. Stretching seems to be coming to an end, they are down to 1/4 to 1/2 inch per day. 1/2 nutes may have been pushing it a little, I see some barely noticeable burnt tips on upper new growth. Will drop to 1/4 feed schedule on feeding days.