pepedopolous
Member
In the US it seems that the Fabco NV-55-18 is regarded as the best needle valve for aquarium CO2.
There now is a UK distributor so it might be worth checking them out: http://www.mkaircontrols.com/fabco.htm
Cheers,
P
There now is a UK distributor so it might be worth checking them out: http://www.mkaircontrols.com/fabco.htm
Cheers,
P