I've tried the small canister type where you push the cap down and it releases CO2 over a few hours - I didn't notice any difference in this type of device and I wouldn't recommend it.greenspottedlover wrote: I have heard good things about DIY CO2 projects. Would a actual(Store bought) CO2 dispenser be better?
Liquid CO2 does improve results and I've tried 3 different types and I find Easycarbo the best. Look around on the internet because you'll find it much cheaper than in the shops.
I've read that yeast CO2 is good but is impossible to control which can cause fluctuations in the tank CO2 levels and hence increase algae. (I have no experience)
Many planted tank enthusiasts insist that CO2 injection is the best form of CO2 because it is the most controllable and yealds the best results but it is the most expensive. (I have no experience)