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Thread: Soil mix for Mexican pings out of what I have

  1. #41

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    How high, Brie?

    Thanks,

    Joe

  2. #42
    Never Knows Best gill_za's Avatar
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    Quote Originally Posted by Brie View Post
    When using all mineral media, its important that they sit in water, I think Joseph talks about that on his site.. They'll go dormant on you really quick if you dont keep the water level high enough(i've learned that the hard way lol).
    I see this as an issue with mixes such as 1/1/1 turface/coarsesand/lavarock. And I believe I see this in a few of the pots that I recently switched to a mix that has Very Coarse sand (mesh 10 or so) in it. But I think that if perlite would be added to the mix water would rise up due to capillary action through perlite and turface and the pots could be allowed to dry for couple of days as suggested at www.pinguicula.org.
    In addition I'm hoping to try what was suggested here by Joseph: http://icps.proboards.com/index.cgi?...nt&thread=4462

    "Presently I place a few pieces of LFS on the bottom of the pots (to help retain media), then I pack the pots with moist, iron oxide coated, perlite, to within 1/4" of the pot rims. Then I dust the perlite surface with RootShieldŽ and a little dried insect powder. Then I cover the perlite surface with a layer of APS or "kitty litter", then spritz the topping with a 40ppm solution of peters 20-20-20 soluble fertilizer with trace elements. I then make a planting hole and insert the plant in its new home."

    I don't think I mentioned it here but I do add iron oxide to all inorganic mixes to fight off chlorosis.


    Basically, my recent switch to very coarse sand and absence of perlite could be an issue in some of these pots. Previously everything was grown in mesh#16 sand. Lava rock also does not help matters as it retains little water. So increasing the ratio of microporous minerals could be an answer to quickly drying media


    Edit- Here is what I just noticed:

    This is pure Turface Pro League which is made up of smaller particles than the one in MVP or in Pondcare Aquatic Planting Soil



    Notice that the surface does not get wet completely. Turface is not good at capillary action.
    Below is a little experiment that I just did with ink for better visibility. I am sure I am not discovering America here ofcourse, but it gives me a better idea on what mixes to make in the future:

    Turface MVP on the left perlite on the right


    Ink moves in into perlite via capilary action and turface is just getting wet on the bottom (same thing happens when I use water)


    One more drop of ink added in the middle:
    Last edited by gill_za; 04-17-2012 at 11:09 AM.

  3. #43
    jeff 2's Avatar
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    suite

    Bonjour

    for me you have 2 problem

    the capillarity and no alcalin notion in your substrat.

    for a better capillarity use river sand (little granulimetry)with your substrat ( see in aquariophily shop)

    the lime is not a good alcalin substrat (often mixed with a lot of chimical product ) use a alcalin substrat more natural , may be you can try ;coral crushed in addition with your actual substrat.

    jeff

  4. #44
    Never Knows Best gill_za's Avatar
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    Jeff,

    Aragonite is essentially the same as crushed coral correct?

    I was hoping to avoid using fine sand and use perlite as substitution to increase capilarity because fine sand would compact over time.

    My next test would incorporate aragonite/crushed coral and setting up couple of pots without it to test the affect on the plants.
    Is this the current ratio that you are using:
    http://www.terraforums.com/forums/sh...5&postcount=19

    Thank you
    Last edited by gill_za; 04-22-2012 at 02:28 PM.

  5. #45
    Tropical Fish Enthusiast jimscott's Avatar
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    I think I might repot all my Mexican pings with a combination of APS / crushed coral/ egg shells.

  6. #46
    Never Knows Best gill_za's Avatar
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    How is crushed coral at retaining water? I have never seen it up close, will it work similar to perlite?

  7. #47
    kulamauiman's Avatar
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    Quote Originally Posted by gill_za View Post
    How is crushed coral at retaining water? I have never seen it up close, will it work similar to perlite?
    Depends on how fine crushed. Coral sand is our beach sand in Hawaii and behaves like any other sand in regards to particle size and water movement. However chunks of coral actually has internal pores and is more apparent depending on the type of coral.

  8. #48
    Never Knows Best gill_za's Avatar
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    kula, what do you grow your pinguicula in?

  9. #49
    jeff 2's Avatar
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    crushed coral ( without salt) or crushed egg shells are 2 alcalin notion , crushed aragonite or calcite also.
    test with the PH your substrate , if you have a PH:7-8 is good for them , 5-4 no .

    in my mix ( link) it is the same thing like calcareous sand.

    for the capillarity , the fine sand make the link with the big piece , if you have just big piece the capillarity often do not work .


    have you try to find in USA a attapulgite-sepiolite productor or importer ?

    jeff
    Last edited by jeff 2; 04-23-2012 at 03:13 AM.

  10. #50
    Never Knows Best gill_za's Avatar
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    Quote Originally Posted by jeff 2 View Post
    for the capillarity , the fine sand make the link with the big piece , if you have just big piece the capillarity often do not work .
    I hope to achieve the same results with perlite through its porosity. Unfortunately in my experience fine sand washes out from the top layers of soil towards the bottom leaving empty cavities and compacts soil below.

    Quote Originally Posted by jeff 2 View Post
    have you try to find in USA a attapulgite-sepiolite productor or importer ?
    jeff
    Unfortunately this is the first time I hear about this type of soil. It seems though it is not a commonly used component, at-least around here? I'm also reading rather conflicting reviews about it on cpuk.

    Also pH 7 is neutral pH. pH 8 - is just MILDLY basic. So what is more important alkalinity? or is it actually Calcium cations uptake?

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