Hi Timrey. You should at least have some tap roots by now. One thing to think about. I germinated 4 plants and used rockwool and the same exact system as you. 3 out of 4 of my plants sprouted tap roots within a day or two of being put into the SuperCloner. The 4th one took several days longer and I couldn't figure out why. Finally I noticed the rockwool cube was lower in the net cup and the bottom of the net cup was really close to the water. I think it might have oversoaked the cube? I pulled it up just a bit and it popped a tap root within 1 day. The others, the ones that popped roots quickly, had the bottom of the rockwool cube maybe a 1/2" from the water in the reservoir. Like a previous poster I also watered the cubes every couple days with some RO water mixed with some rooting solution.
One other thing to note from the pcs above is that the seed leaves "cotyledons" are starting to turn brown, especially on the larger seedlings shown above. That means the leaves are either running out of energy (nutrients) or they are getting light burned. I doubt its light because you are using the T5's and the other leaves look fine. The cotyledons store energy for the early seedling growth and when they turn brown it's a signal they are being depleted. 23 days is long time, even though you don't see huge growth, they are still burning energy. Just something else to think about.
I almost gave up and started over when my leaves were turning brown and dying. Glad I kept with it, things are getting much better and I'm learning through my mistakes. You'll get there man, hang in there!
Sharky
