Hi in.music.u.trust

I am no expert but I do have some input for you!

First, Use your PH test kit !!!!

Next a 34 hour day is too long, hopefully your 16/18 lighting schedule was a typo. I personally would go with a 24/0 schedule. I suggest using CFLs for the time your door is closed. Only use the 400 watt when the door is open and they can get some fresh air. Add a small fan to move the air around, plants need fresh air.

You should not have to water plants every day. Move your plants to larger pots, with good drainage in them. I recommend using opaque pots, your roots don't need the light. Add more soil, get your plants up out of the cups and on the top of the soil. I also suggest switching to Ocean Forest, since you use Fox Farm. Your plants have germinated and need a potting soil not an Agro-ponic grow medium.
When watering, don't moisten soil, give them a good drink. Excess water will drain out of the pots and you shouldn't have to water again for 3 days or so.

You should consider investing in some CalMag to use with your Grow Big.

Well that's a little input for your consideration.
Good Luck :thumbsup: