Is CO2 worth it?

[Dank4The20]

I've started running Co2. All things in check it has a dramatic impact on growth. It kinda catches you off guard.

 

[kev4168]

Just been having a quick read through nd it all sounds like alot of work when you can get the exact amount of co2 you need using a (ebay)£160 unis system.. in my experience i find you get what u pay for

 

[tannaberton]

Get a 5 gallon bucket of warm water and a beer mix. Leave in the grow room and you get more CO2 than you need and beer too. If you don't like beer I am sure your neighbour does. It makes a difference, especially when starting plants for the first two weeks. You need a fan on the floor to blow it around as it i sheavy.