First time using regulator - some questions
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Old 10-05-2013, 10:49 PM   #1
AkCrimson
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First time using regulator - some questions


Hi there, I just set up my aquatek mini c02 regulator and I have some questions.

Firstly, do I need to turn it off at night, or when the lights are off?

Secondly, the needle valve seems to be either unreasonably picky or possibly broken? The tiniest adjustment seems to either have no effect or a huge effect. I'm attempting to get 1 bubble per second in the checker and it's proving nigh on impossible.

Also, I've got probably 3ft of tubing from the regulator to the tank, so it seems like the pressure adjustments take awhile to set in, which makes the prospect of turning it on and off every day quite daunting.

Any ideas or suggestions that might make this easier for me?

Sent from my SAMSUNG-SGH-I337
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Old 10-05-2013, 11:15 PM   #2
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I think that regulator puts out a fixed 60psi. IMO that's on the high side. It might be adding to the sensitive nature of the needle valve. I'm not an expert though but that's my hunch.
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Old 10-05-2013, 11:43 PM   #3
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How sensitive are needle valves in general? For example if I put too much pressure when turning the knob to the off position? Hubby says they're really sensitive

Sent from my SAMSUNG-SGH-I337

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Originally Posted by larams67 View Post
I think that regulator puts out a fixed 60psi. IMO that's on the high side. It might be adding to the sensitive nature of the needle valve. I'm not an expert though but that's my hunch.
It's at about 50 psi now, and has been since I installed it



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Last edited by Darkblade48; 10-06-2013 at 04:23 AM.. Reason: Please use the edit function for back to back posts to keep threads cleaner
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Old 10-06-2013, 12:01 AM   #4
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Quote:
Originally Posted by AkCrimson View Post
How sensitive are needle valves in general? For example if I put too much pressure when turning the knob to the off position? Hubby says they're really sensitive

Sent from my SAMSUNG-SGH-I337
He's right, be gentle or you'll destroy the valve if you crank it closed.
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Old 10-06-2013, 03:17 AM   #5
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Make adjustments and for at least 2 hours don't touch it.
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Old 10-07-2013, 11:55 PM   #6
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Do I need to turn it off at night?

Thanks, I think I may have cranked the needle valve too hard so I'm going to see about getting a replacement

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Old 10-08-2013, 01:36 AM   #7
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Mine wouldn't hold a count for anything on that bubble counter. Turned out the bubble counter that came with it leaked like crazy. I replaced the bubble counter now adjustments are a piece of cake.

You have a solenoid on the regulator I use it. Plugged it into the timer with my lights. Some people run co2 24/7 some turn it off. From all the reading Ive done on it I havent found a straight answer to that.
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Old 10-08-2013, 03:04 AM   #8
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There are no firm answers for whether to turn it off at night due to some many thigs to change the answer for different tanks. If you have fish in large enough numbers and they are sensitive to too much CO2, it can be a deadly combo to leave it on at night. Plants don't use CO2 when the lights are out. Many people do turn it off at night. That is where the solenoid is used. Plugged into a cheap timer, it will do all the work for you. I don't think many users would like to use the needle valve to turn the CO2 off/ on. A good needle valve is a precision valve and as such it is expensive and quite easy to damage the needle. Think of it as fine silver. If you force it against the metal seat each night to turn off, it will get distorted at some point and not work well. It is more for fine adjustment of the gas rather than off/on. Better to use a solenoid if you have one or turn the tank itself off rather than risk the needle valve.
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Old 10-08-2013, 04:06 AM   #9
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Ok, so I'm going to order a timer eventually, and send my current regulator back. Hopefully the new one gets here fairly soon

Have no fish currently, merely a handful of plants.

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Old 10-08-2013, 01:47 PM   #10
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There's no real benefit running CO2 at night so turning it off will extend the duration inbetween needing refills.
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Old 10-08-2013, 03:46 PM   #11
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Also timers are cheap walmart has a digital one I've been using the past 6 years for like 5 bucks. Shipping would cost as much as a timer
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Old 10-08-2013, 05:02 PM   #12
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Amazon Prime baby! Free 2 day shipping.

I'm sending the old one back and ordering a new one. I've had it running for about 3 days and my plants are already showing new growth so that's a good sign

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