Hydroponic question

I have 5 autoflowers. They are about 1inch tall but some have roots sticking out of the rockwool. I just wanted to know when do I put these little guys in the hydroponic system? Its only been 3 days should I wait longer?

The first few days of your little spuds lifes is all about growing a nice root system. ONce you see a nice root system develope it is getting close to transplant time. I might wait a little longer and let your girls get a tad bigger though. Once you see some vegetative growth will be a good time to transplant.

I agree, just make sure you don't let the roots get too much light exposure if they are sticking out of the rockwool.

I start with 1" cubes, when I see roots I put them into 3" cubes, when I see roots from those I stick em into planters filled with Hydroton and put them into my garden and watch them take off.