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Re: [APD] Solenoids & Needle Valves

urville wrote:
> I notice alot of Co2 systems dont come with a needle valve. And i mean even when they are called complete deluxe systems. Why is this? Are they not as important as I had been led to believe? And wil any needle valve do? I see alot of different kinds some for different gases.
> Last but not least. is there a definitve answer as to whether you need a solenoid. I see that ph controllers are optional. and in my tank with a constant bubble rate I cant ever see needing one, but the solenoid issue, I cant seem to find an argument for or against them that gives any real world proof either way.
> Anyone, Anyone? Bueller, Bueller, Bueller.

A solenoid can be useful if you want to save CO2 by shutting it off at 
night. Otherwise, it's not necessary. Many people just set up a bubble 
rate that gets them to the level they want and just leave it there.

Jerry Baker
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Aquatic-Plants at actwin_com