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Rotala wallichi tanks

Discussion in 'Journals' started by Tom Barr, Sep 14, 2017.

  1. Tom Barr

    Tom Barr Founder
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    pH is a bit less than that.
    and the upper bound is higher, 5.7-5.8 and then 7.2. But......it depends on the tap water and time of year, spring snow melt, the KH drops by 1/2 or more.
    So about 35ppm now, will drop to 15-20 ppm in Feb through say May or June.

    CO2 is a maybe 55 ppm or so at the peak.

    In all cases, the pH goes way above 6.5 at night.

    In these tanks outside, pH drops a bit lower, it'll take a little time since I did a full water change about 3 weeks ago.
    Over time, the KH slowly drops. No new sources other than evaporation make up is added.
    I added new ADA AS also, so that will bind the KH and GH up.
     
  2. Tom Barr

    Tom Barr Founder
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    pH is about 5.7 or thereabouts right now and KH is about 35-36ppm. This is due to lower snow melt water, it'll drop to 1 KH, about 20 ppm after the rains and snow kick in here in a month or two.
    But this does not apply to the garage tanks. They do not get water changes. I'll run some pH and KH test in awhile here. Max and mix pH's (order some stuff for a client, got a few extra items for myself for the favor) and KH using a Hanna alkalinity colorimeter.

    I do not heat the garage tanks but I'll have to here since it can greatly impact the plant's growth rates, as content and other important parameters.
    I've been selling plants to try and thin the number of species down as these tanks are overflow tanks for other species.

    R. species mexicana "Araguaia", I think this might be R. pusilla.
    Anyway, it's growing well in my 120 gallon finally, the 1st attempt did poorly, too crowded I suspect.
    The transplanting led to stunted tips and lost leaves, but nice new growth comes back just like the tanks without dosing.

    I reduced the total flow in the 120 gallon via new Reef octopus pump and cut the energy by over 1/2. Added more CO2.
    Added new ADA AS.

    Redid a lot, eradicated the Bladderwort. That and adding new soil was a big job, but needed to be done.

    I got rid of the Red Neasea 2 months ago to make room for Erios but I'm going to get some more and try to see how it responds to difference ranges.
     
  3. skija

    skija Lifetime Members
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    Hi Tom , why did you reduce the flow in the 120 gallon tank ?
     
  4. Tom Barr

    Tom Barr Founder
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    It impacted some plant groups and designs I want to do. Impeding flow too much, so rather than adding more flow, I add less and make the CO2 is richer.
    I have a lot of wiggle room with CO2, I use O2 pure gas and a wet/dry sump etc. I'm still pushing 500 gph. Like two ADA super jets.
     
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  5. Tom Barr

    Tom Barr Founder
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    I've been working more on my bonsai lately. So I'll get to this this coming week more.
    I need to add the heaters asap though.
     
  6. Tom Barr

    Tom Barr Founder
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    This is at 0.5ppm a week(dosed at 1/2 this amount 2x a week) using DTPA and CMS mix at 1:1.

    IMG_1903 (2).JPG
     
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  7. Tom Barr

    Tom Barr Founder
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    Other tank is similar:

    IMG_1905 (2).JPG
     
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  8. Tom Barr

    Tom Barr Founder
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    Red cross looks a decent. Needs room and less crowding to keep leaves and maintain nice color.

    IMG_1902 (2).JPG
     
  9. Pikez

    Pikez Rotala Killer!
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    Red Cross is Cuphea species. Don't know the species name...

    [Edit] It is Cuphea utriculosa.
     
    #29 Pikez, Nov 20, 2017
    Last edited: Nov 25, 2017
  10. KeeperOfASilentWorld

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    Dear Tom,

    Could you explain your way of using pure O2 gas?

    Thank you.
     
  11. Tom Barr

    Tom Barr Founder
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    I use a Chihiros Twinstar knock off, they run about 50-60$.
     
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  12. fablau

    fablau rotalabutterfly.com
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    What are the benefits of using that device compared to a regular aerator or air-filter? Smaller bubbles?
     
  13. slipfinger

    slipfinger Article Editor
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    This video explains the difference.

     
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  14. Tom Barr

    Tom Barr Founder
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    Pure O2 can increase the % above 100% ambient to that of air. Same with Plant's pearling aggressively late in the day. And these units add about the same amount as a thriving plant community, but it keeps going even at night.

    O2 is not very soluble in water, unlike CO2.
     
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  15. fablau

    fablau rotalabutterfly.com
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    Thank you guys, I see the difference now... Wanna give it a try!
     
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  16. KeeperOfASilentWorld

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    Thank you for the reply and information. Do you experience any problems with the Chihiros unit?
     
  17. Tom Barr

    Tom Barr Founder
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    None. Over time, the electrode will get marl deposits on it, you can soak for awhile in vinegar to remove, but do not scrub. Twinstar has the same issue, so they last 6-12 months etc. You buy a new one and keep going.
     
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  18. yme

    yme Lifetime Charter Member
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    Hi Tom,

    I completely missed that you use these kind of devices. So you do think that it is a good thing to add to a tank?

    greets,

    Yme
     
  19. deepgreen

    deepgreen Member

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    This looks like an explosive concept. Is this really an electrolysis unit that produces hydrogen and oxygen? Besides this, what is the O2 doing in the tank specifically beyond the company sales talk?
     
    #39 deepgreen, Nov 28, 2017
    Last edited: Nov 29, 2017
  20. Tom Barr

    Tom Barr Founder
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    Well, they are relatively cheap, add pure O2 gas. A little extra O2 is not bad in any way I can think of really, helps oxidize the detritus after you uproot and trim. Trim/uprooting causes the O2 to drop if you use soil. The older more broken up soil, the more this drop will be(per unit of of disturbed soil). New ADA soil? Not much.

    The other potential benefit is adding more O2, so you can add more CO2 without harming the fish. This is more likely an issue for folks with canister filters, and the units do tend to roast the surface scum effectively.
    So in this context, they are better than adding a Vuppa or an Eheim 350 surface skimmer. Nicer to watch and look at.

    None of these benefits are in the Twinstar or the knock off's marketing or ads. Not sure why but they just did not for some reason.
    They work up to about 100-120 gallon aquariums with the latest versions.

    FYI: They do nothing for algae. Green spot, GDA, BBA, Hair, Red moss etc, regardless of the claims.
    If they did, then they'd risk killing livestock and plants due to user errors, which is worse than having only a non significant impact on algae.

    Fear not, if you add enough O3 or O2, you can kill algae.
    Around 200%, or about 13-14 ppm O2, algae will die, Staghorn/most reds, many Greens, etc.
     
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