[Bert H]

Hey Matt, welcome to apc! Let me direct you to some basic reading which you should find helpful:

http://www.aquatic-plants.org/articles/basics/pages/index.html
http://www.aquaticplantcentral.com/forumapc/showthread.php?t=14684
http://www.rexgrigg.com/

Check those out, and come back with questions.

Regarding your fish load, that seems a little high to me for a 14 gal tank.

 

[Bert H]

I have a 10gal which is CO2 injected, so it's definitely not overkill. How much light are you planning on having?

DIY CO2 with yeast/water is not a controllable system. The CO2 produced just is fed into the tank/reactor as you choose. What comes out is what you've got.

Your other choice is Excel which monetarily speaking, is ok with smaller tanks. It works well, and is certainly do-able on a 14 gal.

 

[Bert H]

If you use pressurized and want to be sure of your levels, a drop checker is the only way to go. For Excel, just follow label directions. I would expect you could get away with using Excel, and running a photoperiod of about 7-8hours. If you needed to adjust afterwards, you could do so according to your needs. I have 36W over my 10 gal with pressurized.

 

[Bert H]

One of the sponsors sells an adapter to use paintball CO2. Can't remember which one off the top of my head though.

I think it's Orlando with Green leaf Aquariums - he's one of our sponsors, good guy to deal with.