Indoor Hydroponic Vegetable Garden Update. Broccoli 

I'd definitely look into soil growing with all that pumps etc

Try with good living soil and figure out how much feeding the plants need then switch to pebbles or airoponics.. It's much more forgiving to mix a nice soft soil mix (You can use pebbles in there too) and when the plants are bigger you could transplant to the coco or pebble medium.. Also, have you tried using coco in these pots? This bottom feed system needs a wick like medium so it can suck up the water through the medium.. Pebbles are awesome but they need a drip system too, because they are too far appart too suck water to the top.. You can just add drippers and a submersible pump that drips from the top.. I would start the plants in nice soil then transplant in coco in your bottom feed pots (Without the drippers on the coco) and i would add a humidifier in the tent, to keep the moisture up, since you aren't focusing on flowers in veg phase plants love moisture. And i would lower the LED's.. That must be poor intensity at the plant height.. The fans are unfortinetly crap, all the smaller clip on fans are ment to be switched on for maximum 12hrs/day thats why they fry in a year or so (if they are on constantly). I use a big camping ceeling fan about 60cm diameter hang it above the LED, so it cools the LED and blows warm air on the plants (It's harder to warm up a tent with LED), Or a big tower fan in the back.. Bigger=better with the fans (Low noise, big airflow and they run cool/longer life) Great work man, keep on growing.. Maybe try potatoes in the pebbles next, easy to dig out 😀