Pressurized Co2....

[Rlon35]

....there is no substitute. Times are hard, money is short, but if you get stress relief from your planted fish tank, you simply must upgrade your CO2 system. It is unbelievable...the whole tank glows mates...bringing me more joy every day

 

[aaronnorth]

it is amazing the difference it brings,

 

[waterdrop]

sigh...