you can do what you are doing, it won't hurt for you to root your pepper cuttings in there, but you should only have 1 plant in a system like that, unless you are growing lettuce. when they root and your seedlings start to expand their roots, you will have to seperate all plants to their own system, or roots will get5 tangled, then you are screwed.

that sprinkler head...does it provide so much water pressure that you could damage your roots?

good start. ck back later. lw