Alright, I made my bubbler. It is like 60 gallons. You buy baskets and lavarock, vermiculite, whatever you like and fill the baskets. Cut holes in the lid just under the size of your baskets. Another words, if you have 3" diameter baskets cut the holes in the bubbler lid to about 2 3/4". Make sure the baskets fit snug. Put a small notch in the lid and resevoir for your airhoses. Go buy a air pump for fish tanks at walmart. For a big resevoir like I'm talking about buy 2 to 3 airpumps. Hook them up to the little vinyl hoses that you buy at wal-mart and run the lines to a little air stones and place them evenly in the bottom of the bubbler. Make sure your getting plenty of air distributed as this will keep your roots from rotting. And Walla, you have a homemade bubbler. All supplies can be found at wal-mart.

Something to consider.... Before you start, you should consider how your going to drain your bubbler, because it can be a bitch. I suggest, going to the hardware store and mounting a small valve near the bottom using apoxy and rubber washers so that you can hook up a hose and just drain your resevoir. It is much easier than siphoning. Just a suggestion. And also, you can place as many holes in the lid as you like, depening on how many baskets you have and how many plants you want to grow.