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CO2 not fully degassing

Discussion in 'CO2 Enrichment' started by SingAlongWithTsing, Apr 14, 2017.

  1. SingAlongWithTsing

    SingAlongWithTsing Junior Poster

    Feb 17, 2016
    Likes Received:
    Local Time:
    1:07 AM
    So I recently checked my parameters today after switching from a wet/dry sump to a filter sock set up for a week

    dKH 11

    dGH 14

    tank water 13hrs AFTER co2 turns off 7.5 pH

    degassed tank water 8.2 pH in a separate cup

    co2 is on for 8hrs (1 pm to 9 pm, cerges reactor 4.5" x 20") pumping at 100ml/min. pH drops to 7-7.2 after 1hr, it's close to 6.6-6.8 pH by 9pm. Lights are on from 2pm to 10pm.

    i guess my main question is if i should be worried? the fish dont seem to care about the high amount of co2.

    now if i want to save on co2 can i just set the timer to shut off a few hours earlier? or would getting a ph meter be a better idea? how important is it to get a 1 point drop before the lights are on?
    #1 SingAlongWithTsing, Apr 14, 2017
    Last edited by a moderator: Apr 14, 2017
  2. rajkm

    rajkm Article Editor
    Staff Member Lifetime Member Article Editor

    Sep 16, 2015
    Likes Received:
    Local Time:
    9:07 AM
    I would continue with static injection and use PH meter only to monitor the readings.

    I have set a air pump on timer which starts about 10.00 PM when all other ambient light in my room is off. I keep it on for 3 hours which is generally enough because that is a powerful airpump, your case might be different.

    With a wet/dry you O2 levels should already be up and should help degassing. Surface scum build up could be another issue, if so I would add a skimmer.

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