Okay, I have designed a cross between a DWC bubbler and an Ebb Flow hydro setup. This method allows for a large resevoir (31 gallon rubbermaid buckets for $10.00 at Home DePOT)
This is how it works, a pump is constantly on, pumping nutrients through a Fill/Drain fitting in the bottom of the bucket. Then, there is a tube either extending from the bottom of the bucket or drilled to the side of the bucket at the max depth of the water -- the overflow tube. Once the water reaches this point, it flows back to the resevoir and is recirculated!
This serves a few purposes:
1. A large resevoir mean less "check up" time required.
2. A constant circulation of nutrients.
3. The return water, splashing in the resevoir, oxygenates the water.
4. Run multiple DWC bubblers off of one resevoir (if a 30 gallon resevoir, then you could easily run 3-4 buckets without worrying about running water levels too low.
Now, I have a question. Would it be best to put the airstone in the bucket where the plant is, or in the resevoir. Or both? Or, with the return and constant agitation of water... is an airstone necessary?
doob
[This message has been edited by Doobious (edited August 26, 2000).]