水草情迷

Hi all,

I want information and comparison on these two CO2 system. Please advise and will be grateful if the cheapest place in stock is suggested. Thanks!

i use both of the systems b4
dulpa is the best but the most expensive
dupla co2 bottle which is made of aluminium is light weight. the dupla regulator also good the fine adjustment is prefect
my 1.5kg bioplast bottle has gas leakage when the main tap is not fully open. my friend bottle also have this problem.But some of a fish shop boss tell me this bug is fixed now. i dont know it is ture or not.