First Time Grow with PICS. Stealthhydro Kit. Advice Plz!

Hi All.

New to the site and to growing. I have done a large sum of research and reading prior to starting my grow.

I am growing using bubbleponic way. I would appreciate the guidance and advice of any experienced growers.

I have 2 seeldings that are 1 week old and 1 seedling that is about half a week old (growing faster then my older two). The older 2 were started on 10/2.

As of now two of them seem to look visually healthy but one of them seems to be in trouble.

Basic info:

Reservoir Ph: 6.5-7.0 (sometimes it rises to 8 by itself. keeps rising by itself)
Temp: 72-85 F
Humidity: 36-48%
Lights= Dual Spectrum II High Output Fluorescent Bulbs

-Bulbs: HighBays posts with Sunlite 120v SL85/65K DAYLIGHT and SL85/30K WARM WHITE

Light Cycle: 18/6 with autotimer. 18 on 6 off.

1 airpump with airstone wand= Running 24/7
1 water pump with a 6 hub feeder that has only 3 ports flowing= Running 24/7.

Have a fan above it all running 24/7


Setup= Stealthhydro's Dual Spectrum Bubbleponics Complete Kit

Ph Tester= Milwaukee pH 600 Meter (Do I have to calibrate it each use? Ive been doing that so far with bluelab's ph 7 sol.)

Questions:

1. Stealthhyrdo's grow manual suggests introducing grow nutrients after 1.5-2 weeks with 1/4 dosage. I am planning on introducing them tomorrow or on Saturday. Is that to early? Should I wait longer? If so, when is the best time?

2. The plants seem to be growing towards the Sunlite "Daylight" white (the bulb on the right of the setup pic) more then the "Warm white". Stealthhydro's manual says to use both bulbs in both Vegetative and Flowering stages. Should I get another Sunlite "daylight" bulb and replace the "warm white" ? Or is this natural? Any info on this will be appreciated!!!

Setup Pic:
Attachment 287291

3. The seedling in the back that looks "troubled" with spots on tips of the 2 starter leaves (please excuse my incorrect terminology):

Attachment 287292

Why have the spots come on this one and not the other two? The roots are growing sideways and are now embedded in the rockwool. Will that cause problems? Should I remove this plant from the grow? Solutions?

4. Can anyone look at these pics and tell me if this is normal or "slow" growth for a 1 week old seedlings? Any comments?

5. Why does the PH keep rising by itself?

6. Only 1 root of the Strawberry has exited the net pot but it is not long enough to reach the 6gals of water as yet.

Rest of Pics:

Strawberry Haze in the left most netput front row:
Attachment 287293

IDK Name Bag Seed:
Attachment 287294

Setup with different angle:

Attachment 287295

I REALLY APPRECIATE THE TIME OF THOSE WHO GIVE ADVICE! LIFE AND MULA SAVERS!!

Any1? Please help.

Journey 2 growth -Ep 5! Bushy and beautiful! - YouTube
Check mines out Bro! This may help a little!

ps. Maybe pull your lights in closer , about 10 cinemeters away!