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  1. R

    Problems with setting up JBL Co2 System

    Thanks Sam I have actually 'solved' the problem the needle valve had snapped so no matter how much I opened the valve no CO2 was ever going to be released! I have replacement which I will try out tonight The key learning for me is when closing the needle valve don't overtighten! Dan
  2. R

    Problems with setting up JBL Co2 System

    Hi everyone, my first post and I have a problem! I am setting up my first serious planted tank and have invested in the JBL M603 system with a 2kg cycliner. I have set the ph controller up, carried out the callibrations and went to release C02 in the system but nothing has happened no bubbles...
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