Seedling have sprouted, got some questions on my next step.

I germinated 10 seeds and all cracked, so I put them in rockwool cubes which I soaked in water ph 5.5. I then placed all ten in my planting tray with humidity dome I have a seedling heat mat under it the temp is a constant 77 degrees f and humidity varies between 80 and 90%. 8 out of 10 have sprouted to about 1-1/12 inches tall all have their cotyledon leaves and some have very small jagged leaves growing from the cotyledon leaves. This is day three since they were placed in the rockwool and dome. I mist the dome,rockwool,and plants a couple times a day. The rockwool is damp on top and wet on the bottom. The tap roots have made theyre way to the bottom of the rockwool and are now poking out. I have a CFL light setup on 24 hrs a day. My question is when should I transplant them to my DWC? When should I begin nutes? And how far should the lights be from the top of them? Right now the light is 10-12'' above the dome which is 7'' tall so in total the light is 17'' from the plants. And when should I change over to my MH CFL lighting setup? Thanks in advance

If the roots are 1/4 inch or more out of rockwool transplant if you wait too long, roots may get damaged. Broken during transplant. Will shock plant and stunt growth. Not sure how strong light is, to advise distance and if ready yet.

The CFL that is on it now is 36wx2 the MH is 250wx2 and 96wx2 PC. The tip of the tap root is barely sticking throught the bottom of the rockwool cubes.

Give a couple days and you should be ready for transplant, just keep the mh about 2 to 3 feet at first. Wait for growth and you could lower light a bit.

As far as nutes I have GH Flora series Micro Grow and Bloom. When should I start adding these and should I add all 3 or just the micro. The directions say for cuttings and sedling add 1/4 teaspoon per gallon, but doesnt state if I should usee all three or what. Im confused?

I would be careful with them when small. Very light on nutes until you have a few nodes going and looking good. I don't give full veg nutes until 1 to 2 weeks under veg lights.