Originally Posted by Lizid
Hmmm guy this is a very interesting I have just setup a DIY system so I am also very interested in what's being said, but my next question I need to ask is, at what point doest it just not make sense to run DIY?
I will keep following this thread as I am really thinking about the same problems...
I would say, when you are spending more money on sugar and yeast than it would cost for a co2 setup and refills then you def would be better running pressurized. For me this is what I HAVE to do for now. I have a baby on the way and in between jobs. Luckily I work as a chef and have easy access to cheap bulk yeast and sugar.
Everyone says there is no point doing diy on anything larger than 30 gallons at the most. I find and have experimented with and without on my 55g and have seen a huge difference adding even just three 2litre bottles but have gotten my co2 to 22ppm with 4. So thats 8 cups of sugar every two- three weeks. I think most grocery stores sell a 25lb bag of sugar, probably somewhere around $15. That is 56 1/4 cups so it will last about 3 1/2 months. As you can see it quickly adds up. At that amount your looking at $60+ - a year in just sugar. Yeast is usually the cheap part, I get a 1lb bag for around $10 and it last a long time.
I have a friend that had a full co2 tank for his restaurant coke machines. I tried to rig it with a regulator from an air compressor and a needle valve for finer control but it didnt work. I was talking with the Coke guys the other day and asked (hint,hint) you guys know a cheap place in town to get a co2 regulator? They told me a couple places, and then 30 minutes later they were gone and there was a brand new regulator lying on the floor by the back door. Unfortunately I asked my buddy if I could use the tank again and he said he was using it now. I should be able to find one pretty easy though being in the restaurant business.
Conclusion, If you can afford it and have a bigger tank, go with the pressurised system. I will probably go with the regulator I scored and a tank I can get from a restaurant for my 55. Slowly I will gather the stuff to do a paintball setup on my 39 and 29 gallon and might just stay with diy on my 10g.