I'd leave out the peroxide altogether. I know what people say, it's adds an O2 electron or something but it might reduce the bacteria too and you want that stuff to stick around.
As far as the Rooters go, you can geminate a seed in them. I have done so by dipping a cup into the water/fert mix in the bucket, replacing the lid with the seed in it, and pouring the water mix over the Rooter, keeping it wet. If you can do this several times a day (or at least enough to keep it wet), there's a good chance you can germinate just fine. You've just got to get a decent quality fert that will help you do this. I've said this many times in these forums and going to say it again - Dynagrow 7-9-5. Follow the instructions on the back but when germinating a seedling, only use about half a teaspoon per gallon. As the plant grows, start using a full teaspoon, but get a pH/ppm meter and start off around 600-700 ppm and increase slowly until your ppm is about 1100-1200 and preferably use only distilled water you buy at the store. Some good advice given in this thread. DWC will work but takes a little more managing and don't let your water temp get higher than 85 F or you can bacterial overgrowth problems causing the water to stink.
polishpollack Reviewed by polishpollack on . Please Help me with DWC I have a homemade DWC system, made out of the blue storage totes. It has 6 plants in it. 4, 5inch Airstones, and 4 12inch airstone strips, which are all connected to a high output airpump. Also there is a water pump inside the tote to circulate the water. I have 2 of these, so 12 plants total. I have not added ANY nutes to the water yet, the PH is 5.5-6.0, and ive been adding the correct amounts of H202. I started 12 seeds last monday, so 10 days ago. I started them out in paper towels Rating: 5