Droopy Seedlings :-(

Started for 5 days under a Floro tube.
Moved to MH 600w digital ballast one day- then dimmed it to a much more managable 400w.
5 Joint Dr. Seeds- Rockwool Cubes- 1 looks okay to this day other than yellow tips, 1 broke surface halfway 3 looked great 5 days till I placed them in 12" pots and they drooped off
1 germed bagseed- Soil Cup- 5 days Massive Growth its getting dwarfing the others. It is a rare mutation too. Alternating Whorled Phyllotaxy.
Seedlings are about a week old
I watered them daily because the cubes dried fast. I didnt PH the water til 6 days in. 7.5+ One of the 5 in Rockwool looks great. 1 is standing up but has yellow tips. 3 are drooping with skinny stems and are being supported by twist ties and toothpicks. I've had a fan lightly blowing several hours per day since a day after they all broke. Could the PH have done caused this? How do I know if they are dead? They are still a pretty green color. I treated the bad PH with spring water- PH 6.5 and a very light dose of organic nutes. I didnt water for 48 hours prior to treatment. Can I see a turn around? Im gonna try to find a better place for the oscillator fan too. The box stays cooler closed up.

3 days 55 views no advice...
Im not using rockwool anymore. Start in soil. Finish in soil. I might use it with a hydro system getting wet from the bottom up in future grows. I'm posting some pics. Doc's are they dead. They broke surface on the 22nd of last month and look how tiny they are. Still a pretty green. Then look at the yellow seedling. Then look at the bagseed germed in H20 and planted in soil cup now and still flourishing.

well you dont give it nutes. grow it for a month in the soil and read about your hydro system once the roots are developed put them in the rockwool. more than likely they are stressed because they are seedlings and you cant really mess with them untill they are established

They established themselves in Rockwool cubes- tiny ones. At least I thought they did. I transplanted them at this time into 12" ceramic pots full of FFOF soil. The one thats yellow has been that size maybe it got a lil bigger but the only significant change in in 3 days since I posted first time and 5 days since I transplanted it was it got yellower. The other three have not changed much but get fall over. Meanwhile the seed I didnt put in rockwool at all but gave the same ph and light is huge. Do you think the 3 are dead that are fallen over and curled slightly but still green?

Yes, big chances that the problem was the ph. Also if you have to water your plants more than once every two days, that means there is some problem. You should never have to water the plants more than once every 2 or 3 days. And you shouldn't give nutes to plants when they are that young, the soil has already some nutes.

You will now that they are alive if you see then growing bigger and growing new leaves.

Good luck