C02 Is Unstable Need Advice

[weathermen]

Hi all

I have just upgraded my 55 gallon tank from using disposable C02 bottles to having an account with BOC, I’m now using a 25 kilo with new regulator and diffuser “rather than a ladderâ€￾ to put the C02 into the tank, my question is this,

Since the change the pressure is unstable, it’s either to fast, which did cause a slight emergency resulting in a 16 gallon change ASAP! Or it’s to slow which is now showing signs of Brush algae, I’ve read about needle valves, seen one on aqua essentials but they are out of stock, any ideas on how to get my hands on one of these Or is there something else, Help is needed

Thanks

 

[voo]

Ebay have some usually.

 

[weathermen]

thanks, does it matter what type I get

 

[Jen]

do you just have a tank and on/ off valve? Is there a gauge or anything with it?

 

[weathermen]

Hi ya, I have a cylinder with dual regulator shut off solenoid non return value and diffuser, that’s the kit, just need something to balance the flow of C02 better, just to unstable for my liking,