I think can answer a few of your questions:

1) I don't believe there is a problem with just using ebb&flow (at least that is my understanding, I haven't actually done that), but I'll let a hydro expert answer that for sure. I am pretty sure that is what stinky uses, but I might be wrong.

2) I think you might be talking about rockwool for starting seedlings. The balls you are talking about are hydroton grow rocks or something of that sort.

3) Hydroponic systems require specific hydroponic nutrients (and they are not very cheap). I am pretty sure mixing miracle grow with the water really won't do much other then kill your girls.

4) You can certainly grow under CFLs, in fact my current grow is under all CFLs. If you want the best light penetration though, you should go with an HPS. Mind you an HPS = heat issues in comparison to CFLs, at least in grow box situations.

It sounds like you may be in a little over your head with starting with a hydro system. Maybe grab some bag seeds and some decent soil and see what you can do first before you spend a bunch of money trying to build your own hydro system. If you really MUST use hydro, I'd strongly suggest searching this site and reading as much as possible about DIY hydro and grow logs involving strictly hydro. There is tons of information, just take the time to get educated before you make an expensive mess!

Goodluck man; with a little reading and some ingenuity, you'll be on your way to a new grow.

Peace,

-Secret
oSecretGardeno Reviewed by oSecretGardeno on . Making a hydroponic grow box - need help. I'm making a lil grow space in a small space about 1' x 1' x 2' (2' being the height). I plan on making a hydroponic watering system, but I got a few questions that need answering. 1. Does it really matter if my hydroponic system is ebb & flow or a dripper system? I was watching this grow tutorial and the guy said that he first used a dripper system, but used an ebb & flow system for the flowering stages. Is that really necessary? Can I get away with just using an ebb & flow, bcuz thats just Rating: 5