Gelato - Hydro First Grow

On day one of week 6 (7-15): G4 seems to be the only one that continues to show some kind of deficiency. The height of which is 17 inches and is the tallest, they range from 12 to 17 inches. Despite this system is held together by chicken wire and bubble gum (no actual chicken wire used), and my serious lack of knowing what I'm doing, I think for the most part the girls are looking good. Added a picture of the grow room, fortunately with growing autoflowers we can have windows. You'll be able to see unlike most indoor growers our biggest restrictions are room for width not height. 7-20: Been a few challenges. Adjusting proper feed flow, occasional leaks, dropping pH meter in res, loosing dropper in bottle of nutrients and such. Yet it's been going well, Fast Buds Gelato growing great. Gelato #4 grown about 6 inches in the last 4 days, other gelatos growing wide like a thick bush. Definitely will look at going with a 1 inch drain in the future. 7-21: End of week 6... Had to spread plants further apart due to the widespread growth. Gelato #1 is 18 inches tall, Gelato #4 has grown to 24 inches tall and all are about 32 inches wide. Excited to see what unfolds this next coming week. Not listing the amount of pH down due to I'm adding about 1 1/2 gallons of water a day, due evaporation and they are thirsty girls. Using 3 gallons jugs for water replenishing. My well water is about 7.6 pH, adding 14 ml of pH down to each jug to get me close. Unfortunately our pH meter got dropped into a reservoir, so it died. Waiting 7 days for a replacement to arrive, so in meantime I'm using a pool test kit which by no means is accurate yet gets me in the ball park. In the near future plan to have an extra pH meter on the shelf for such mishaps.