Ashburn's 187g endgame tank

Discussion in 'Tank Journals' started by ashburn2k, Aug 24, 2018.

  1. Vhuang168

    Vhuang168 Supporting Member

    Yes, using a pH probe that gets calibrated every month.
  2. ashburn2k

    ashburn2k Webmaster Staff Member

    and your ph reading is at 6.5-6.8? guess i need to stick my ph probe in this weekend.
  3. Vhuang168

    Vhuang168 Supporting Member

    It is currently at 6.67 - 6.71
  4. Flagg37

    Flagg37 Supporting Member

    This is one of the reasons I’ve been avoiding using a carx. It’s such a crucial part of the life support of the tank so if the probe drifts it can be detrimental. I don’t know if I want to commit to monthly calibration. How much do you typically have to adjust it each month?

    When I was monitoring the dt I’d be lucky if I recalibrated every 6 months but then it didn’t really matter.
    Coral reefer likes this.
  5. Vhuang168

    Vhuang168 Supporting Member

    The way I have it setup, it is not really controlled by the pH. If the inflow and injection of the CO2 is constant, the pH will be maintained at that level. The only way it would change is if the either of those parameters change or the pH of the tank changes dramatically. I do not have the Apex control the pH. Only control it has is on the solenoid if it drops drastically (set to turn off when below 6.4).

    The key factors in a setup like this is consistency and reliability of the input and the CO2 injection. Hence the Masterflex and the custom CO2 reg with metering valve.

    The pH is only there for monitoring. If I see a drastic change, something is wrong.
    Coral reefer likes this.
  6. Coral reefer

    Coral reefer Past President

    Yeah, I would never be able to trust controlling one off a ph probe. Just wouldn't be able to sleep.
  7. scuzy

    scuzy Supporting Member

    Y the probe is only to see the drifts once dialed in there isn't much drift unless probe goes bad. A stuck on solenoid on a co2 isn't going to nuke your tank as the regulator only lets out so much gas per sec with the metering valve. A stuck on doser is another issue.

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  8. Coral reefer

    Coral reefer Past President

    I don't trust ph probes is my point
  9. xcaret

    xcaret Guest

    If you have an Apex or pH standalone controller, you set it to shut the CO2 at 6.5 You want to keep the chamber at 6.6 6.7
    To calibrate for a CaRx, use pH solutions 4 and 7
    Once you have it dialed in, just watch it amaze you.
  10. iani

    iani Supporting Member

    I would forget the ph probe. Nice metering valve is all you need. I think I have a bunch of hoke valves if anyone needs one. Got them a long time ago very cheap.
  11. Vhuang168

    Vhuang168 Supporting Member

    PH probe is useful for monitoring. If your feed pump or intake line gets clogged, the pH will continue to drop and turn your media to mush.

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  12. ashburn2k

    ashburn2k Webmaster Staff Member

    Finally released this guy into my DT from the holding tank.

    Saw it was suffering at petclub and had to take him home.

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  13. ashburn2k

    ashburn2k Webmaster Staff Member

    edit: some new corals names for documentary

    dbtc: german blue digi from @RandyC
    superman monti
    christmas tree worm
    green porites
    CRC rainbow acro
    efflo acro
    green milli

    Pink Diamonds zoa
    Spiderman zoa
    Last edited: Jan 8, 2019
  14. xcaret

    xcaret Guest

    Nice find!
  15. rygh

    rygh BOD

    I almost never have to recalibrate PH probes. I do occasionally, but PH almost never moves afterwards.

    I more often have to CLEAN the PH probes when some crud grows or gets stuck on them.

    I also seem to have to recalibrate due to battery level on the pinpoint PH meter.


    Salinity probes on the other hand ... argh!
  16. ashburn2k

    ashburn2k Webmaster Staff Member

    masterflex in place! Thanks @xcaret!
    Waiting for 1/2 to1/4 barb reducer to arrive. How do you guys connect the soft tube to ro tube?


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  17. RandyC

    RandyC Supporting Member

    Last edited: Jan 12, 2019
  18. ashburn2k

    ashburn2k Webmaster Staff Member

    Looks like I’m using a different tube



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  19. RandyC

    RandyC Supporting Member

  20. xcaret

    xcaret Guest

    I tried the tubing section I got; by the numbers, is the same as you have and the RO line fits right inside it, just a couple zip ties to secure it snuggly.

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