NYRkorey

I have 150 gallon tank, I use a 5lb CO2 tank and has to be refilled about every 2 months which is kinda annoying! What size LB tank would one recommend to last me 6 plus months??

mistergreen

Exchange for a 20lbs tank.

TAB

20# the next common size is 50# and they are just under 4' tall. ( i want to say 44" or 46", but its been awhile.) 20# are easy to get last a long time and are light enough to easily move