Ooh, c02 thread... I wouldn't buy a refurbished tank for that cost. I have a 2.5# new luxfor tank that I think was purchased for around $75.00. Doesn't really matter if its filled, my tank costs less than 5$ to fill, and lasts for over 7 months for a 55 gallon. I go to A-1 fire supply or something right across the freemont bridge to get it filled, next to were the GSAS meetings are held. Some things shouldn't be bought used, a tank for one and also a bed mattress. As for the controller posted earlier, it's a bit cheap. For the people commenting you don't need a solenoid, you dont, but the benefits are great. I have a full dupla setup w/ a digital controller. It regulates the PH down to 1/100th of a point. You PH drops to 6.93, it will automatically run until its raised to 7.0 even, or whateer you set it to. My plants grew amazingly fast, much so more than w/out c02. There is really no comparison. The cost for c02 is prohibitive. Some people have used liquid c02 ona drip system w/ some success, but over time its actually more expensive. That being said, I recently broke down my tank and might consider selling my setup if your interested and contact me off list. I havent tried selling it (its a year old), just not sure when I will be able to get back into the swing of things, gonna be a busy year. -macker On Wed, Oct 22, 2008 at 9:42 AM, Betty Goetz <haika@drizzle.com> wrote: > > I have enough problems remembering to do weekly water changes, without > > have to worry if the CO2 is going. > > I usually use fish tank water-change water to water my indoor houseplants. > I have a kajillion of those (weak grin)....so I have reminders. A wilty > hibiscus is pretty good at getting your attention. > > Betty Goetz > > _______________________________________________ > GSAS-Member mailing list > GSAS-Member@thekrib.com > http://lists.thekrib.com/mailman/listinfo/gsas-member > _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member