pH Level off? {PICS}

I have noticed that our plants have been mutating/turning colors in the past week or so and am worried about them and how the problems now will affect the plants later on. They are about three weeks old today. we JUST found our pH testing stuff (for both soil and fert/watering testing) so we think that the pH is off. There are these strange mutations that some of the older leaves have that we think may be due to over-fertilization throughout the second week (we did not fertilize the first week/early seedling stage). Some leaves are wavy. Two plants have a leaf that is missing from the other side (it never grew). Any ideas?

INFO
- Indoor
- FoxFarm Light Warrior SOIL (nothing added)
- No pH testing done yet :/
- Water source: Tap water until recently, we take tap wter and let it sit outside overnight so Cl can evaporate
- Age: 3 weeks
- Fert: FoxRarm Grow Big
- Rate: Fertilized every other day in somewhat smaller than normal amount (watered/moistened everyday while they are in such small containers, because they dry out easily)
- Lights: HPS 400 watt about 2.5 ft from plant (emits a TON of heat)
- Air Temp: around 75 day 68ish at night (a pretty good estimate)
- Hunidity: Unknown
- Lighting schedule: 16 Hrs light; 18 Hrs dark
- Ventilation- closet door is left open when we are home ( about 4 hrs/day)

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: