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Labels and dates

Discussion in 'CO2 Enrichment' started by Gerryd, Feb 16, 2014.

  1. Gerryd

    Gerryd Plant Guru Team
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    Hey all,

    Well in the last week I had to refill all 3 of my c02 tanks. I finally got around to sticking a label on each with the date the c02 tank was hooked to the reg and used. Noticed today on the 5lb hooked to the 57 gal and dated 2/7/14 was empty......While the tank IS doing well, I don't recall the bubble rate being that excessive, especially in light of my reduction of said rates on all 3 tanks.

    So, I think this may be a clue to some issue or other and I will check into it tomorrow when I hook up a new tank and do a leak and overall check/inspection.

    I will post what I find.

    Later.
     
  2. Matt F.

    Matt F. Lifetime Charter Member
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    Yes, I do that with all my CO2 tanks as soon as I swap them. But instead of a label, I write directly on the aluminum tank with a magic marker. When the time comes to refill, you use alcohol to wipe the magic marker off. A 20# CO2 last about 1 year for me on a 20 gallon. Now that I have reduced the bubble rate to nearly half of what I was injecting, I expect to see a vast improvement of CO2 consumption. My tank is actually doing better than it was when I was injecting over twice the amount of gas. Plants look more colorful and growth has increased.

    That said, a couple weeks on a 5# CO2 tank doesn't sound right. IIRC a 5# tank lasted over 3-4 months for me before needing a refill, and that was on a 20 gallon at a higher bubble rate. You either have a leak somewhere or your gas tank wasn't full (maybe a relief valve dumped gas?). If you're using hose barbs rather than a tube adapter, that connection could be the culprit. Make sure your solenoid is closing at night, too. Still 2 weeks on a 5# bottle means you're losing a lot of gas somewhere.

    ALso check the CGA to make sure you don't have two washers and it's tightened down with a wrench, etc. I'd replace that washer, too.
     
    #2 Matt F., Feb 18, 2014
    Last edited by a moderator: Feb 18, 2014
  3. Gerryd

    Gerryd Plant Guru Team
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    Hey all,

    I think I found the issue. Recently I stopped using the permaseal washers that screw into the tank itself with the more common plastic ones.

    I forgot that you can crank down on these whereas the permseals break the o-ring/brass easily if overtightened.

    When I went to remove the reg, it was little more than hand tight....which is not good :)

    So, I used a new washer (I replace each time anyway) and then cranked down on it properly (I hope).

    I also replaced all of the tubing from the inline check valve to the NW pump. Over time it gets hard being submerged, and can constrict a bit.

    It looked ok, but I replaced it anyway. I saw my bubble rate was higher than I thought, so I reduced that as well. I will monitor as usual.

    I will post if the tank again only lasts a 1 or 2...

    I think the washer was the root cause..

    We will see.

    Later

    - - - Updated - - -

    Hey all,

    I think I found the issue. Recently I stopped using the permaseal washers that screw into the tank itself with the more common plastic ones.

    I forgot that you can crank down on these whereas the permseals break the o-ring/brass easily if overtightened.

    When I went to remove the reg, it was little more than hand tight....which is not good :)

    So, I used a new washer (I replace each time anyway) and then cranked down on it properly (I hope).

    I also replaced all of the tubing from the inline check valve to the NW pump. Over time it gets hard being submerged, and can constrict a bit.

    It looked ok, but I replaced it anyway. I saw my bubble rate was higher than I thought, so I reduced that as well. I will monitor as usual.

    I will post if the tank again only lasts a 1 or 2...

    I think the washer was the root cause..

    We will see.

    Later
     
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