my roots are finally growing out of the basket, some questions if you dont mind

I am growing 2 plants in individual 5 gallon dwc buckets. The roots are finally greowing out of the bottom of the basket lid and I am not finding a clear answer on some questions. I am cleaning the buckets and giving fresh nutes in a couple days and just trying to make sure im doing everything right.

Where should my water level be? I am reading that once the roots start dropping down than only fill it until the root can touch the water or I can overwater it. At the moment there are about only 5 intertwined roots dropping down. Will these few roots be able to pull enough water up for the plant? How far up the roots should I fill the water before it overwaters the plant?

The roots are nice and white atm and I heard h2o2 is great for the plants as the roots love it but will stunt the growth of the plant if you use it to much. I read on another forum that you should give about .5ml per gallon daily. I did this for 2 weeks and my plant seemed to stop growing. I havent used it in the last week and I am noticing quite an improvement already on both plants. I have 35% and am wondering how much I should give them per gallon and how often so I dont stunt the growth again.


thanks in advance. This forum is nothing short of awesome and I love how helpful you all have been so far.

Water to an inch below the basket bottom. The roots are under water, but covered in all those bubbles your air stone is making
I'd use1 ml of that strength H2o2 per gallon once a week...