Originally Posted by DarkCobra
How so? One pound of sugar is theoretically capable of producing so many cubic feet of CO2. One ounce can theoretically produce 1/16th as much.
I re-read the document at the link I provided. Seems I was mistaken.
The document I *was* looking at a few nights ago when researching alternate forms of CO2 production had some additional information, such as "risks of regularly transporting dry ice to the growroom", and "burning hydrocarbons may help eliminate unwanted smells", and was obviously targetted at drug farmers. I didn't save the link, so when posting it here I attempted to relocate the document by repeating the search terms I originally used in Google from memory. This document is almost, but not quite, the same.
Before the drug crop industry was injecting CO2 into their grow rooms, the general hydroponics industry (which WAS developed WAY before it became the 'in' thing to do to grow drugs) was already doing this. You can do a google search and find plenty of white papers done by various government institutions and colleges (including NASA) on how to do it. I get really annoyed by people who think that all hydroponics is for is to grow drug crops.
Myself, I have grown hydroponic tomatos, herbs (like chives, parsley, rosemary, etc) and chile peppers in a growroom using some of http://www.genhydro.com/
modules, along with some flourecent lighting for vegetative growth and a 400w HPS lamp for flowering growth. I also buy food at the local farmers market from companies who specialize in large greenhouses for hydroponics so that they can offer fresh, organic vegetables in the Colorado area, especially during the wintertime.
Heck, NASA has been growing hydroponic plants for years in their space stations, and uses the General Hydroponics line of fertilizers. In fact it is a key part of getting people to Mars.
Are there things that can be learned from hydroponic growth that can be applied to planted tanks? I would say so, yes. EI made complete sense to me after dosing with the FloraBase line from General Hydroponics, which uses the same kind of estimative methods. It also uses an estimative dosing schedule, based on the grower paying attention to the health of their plants. It works really well. CO2 injection made complete sense to me because I had read about it and seen other greenhouses do it that produce veggies on a mass scale, but I had never tried it myself at home.
Anyway, enough lecturing.