i did this when i first started to and let me tell you right now its good to START seeds but you will NEED to move them to a bigger unit and soon. let me explain that when your vegging it will go ok but while this is happening all your roots are going to get tangled and when you get into the next stage the plants will get big and start drinking so much it will be next to impossible for you to keep the right PH with such a small res and there wont be anything you can do about ti because all the roots will be tangled and youll have to do what i did and get a rubermaid and buy a pump and make yourself a dwc just so your plants will make it through to harvest. hope this helps because i wish someone would have told me this when i first started. also with those ag make shure its not in the open because if its not in a clean environment its only a matter of time before you get spider mites.