Experimenting with bubble hydro. First timer.

Ok. I have some bag seeds and tomatos started in a composting material but couldnt wait to try out my newly made 6 hole bubbler. So last night I filled my 18 gallon container with well water that had a ph of 8. I adjusted the ph to 6, added an aquarium heater and am trying to get the water to 60 degrees f. I have 2 bubblers in the 18 gallon container (not sure if thats overkill or appropriate). So anyway I am using lava rock as a growing aggregate and I washed and boiled the lava rocks. Then, for the hell of it I had some shitty miracle gro organic liquid I had left over from last years garden and added a half cup which is half the recommended amount for mixing with 18 gallons of water so like I said, Im experimenting with what I have on hand before my seeds are ready to transplant. I then cut off a couple elephant ear Ivy shoots, dipped them in root stimulator and put them right in. I honestly expected them to be drooping this morning but they appear to be doing very well in the solution

For lighting I have a 4 bulb 48 inch florescent unit and grabbed 4 of the 40 watt GE Plant and Aquarium bulbs. Once again, I know those arent the best choice but its what I had laying around. Ill post pics later today to get some advice and constructive criticisms.

Thanks.

avoid using compost or organic nutes in hydro.
Once you get more experience in hydro you can use organic nutes, but it is not recommended due to the many problems it can create in your root zone.

make sure to keep your res/rootzone light proof.

Dynagro fert is good to use for beginners in hydro. It has pretty much everything plants need.