C02 tank readings/regulator - The Planted Tank Forum
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post #1 of 5 (permalink) Old 04-04-2007, 03:14 PM Thread Starter
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C02 tank readings/regulator

Hi all,
Have a 10# tank, first fill up gauge reads 1100 psi.Bought a Red Sea regulator. After 6 months gauge reads 800 psi. Figured it was time,so I unhooked it and bled off the remainder to take it to get it re-filled-was hardly anything left in it.Had it refilled -took it home and hooked it up- reads 800psi.?took it back to tell them it can't be full-it should read 1100 psi when full. he told me (after weighing it) that it is actually over full by a pound. Now it is reading 850psi. Thinking my Red Sea regulator could be faulty or not repeating- I bought a JBJ unit on-line from Marine Depot. Comes today. So I am not sure what to think-could be ambient room temps? I never really liked the Red Sea anyway -got the first one and to put on the Solenoid you have to remove the barb fitting on the regulator with a "gripping tool" No way will it come off- Red Sea says "it was a fluke" after destroying the regulator to get it off they sent me a new unit ( I of course have to pay for next day shipping- no C02 in my tank would be algae central in 1 week. so the new one came and the barb came off with my hand... Looking forward to the JBJ unit.... Will still keep the Red Sea for back-up ....maybe. Curious to see what the JBJ tank pressure guage reads.....
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post #2 of 5 (permalink) Old 04-04-2007, 03:16 PM
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Well I'm not sure about the regulator, not getting similar readings in similar conditions does sound suspicious, although you are correct in your assertion that temperature affects pressure readings to a fairly high degree.

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post #3 of 5 (permalink) Old 04-04-2007, 04:42 PM
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post #4 of 5 (permalink) Old 04-04-2007, 04:53 PM Thread Starter
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Thanks Rex, I already did. That's what I was thinking, but I do think it is a crappy gauge, we will see what the JBJ says.
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post #5 of 5 (permalink) Old 04-04-2007, 06:23 PM Thread Starter
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Well got the JBJ regulator,and did not like the barb fitting at the top of the bubble counter ( I have a ton of Clippard fittings and tubing at my disposal where I work) I have been using Freelin-Wade PUR 4mm I.D.x 6mm O.D. tubing as it is the right material for C02 and it seems to be the only thing I can find to fit the barbs, Took off the o-ring on the barb at the top of the bubble counter,and put the tubing on and tightened the nut-pulled right off. So I teflon taped the threads and put a 1/8 npt female brass barb on. fixed. We have a item here called Snoop which is a leak detective fluid ( snaked a little bottle of it to take home ) when you put it on fittings if there is any leak at all it foams up like an Alka-seltzer. So we will check it tonight to look for leaks.
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