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Old 04-03-2019, 06:44 PM
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Default Orchid Prep

Hi All,

I am in the process of having 8 orchids shipped to me from Vancouver BC and am doing my research on placement etc when I remembered prepping them to put in the tank may not be as easy as broms and ferns etc.

I have read that scale, mealy bugs and spider mites are the 3 main 'pests' that can affect orchids. I am not sure if a 5 or 10% solution of bleach is ok for a dip, or if an RO dip for an hour or more is safe, or even doing a CO2 bomb is safe? Also I read that doing a spray down of the roots with RO is good practice to remove any of the salts from fertilizers that were used for it's cultivation.

How do you all prep your orchids once received before mounting in the tanks?

If I missed a thread about this in my searching, let me know the link.

Thanks!
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Old 04-03-2019, 07:20 PM
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I soak mine in rain water for 15+ minutes then add enough bleach to make it 5%. I let it soak in the 5% bleach-water for another 15 minutes. Thoroughly rinse off after. I've done this to several orchids. Any blooms will most likely be lost but the plants themselves are fine
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Old 04-03-2019, 07:25 PM
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If there are already inhabitants in your tank i recommend making a simple quarantine tub for them, just to make sure you killed everything and to give the bleach time to dissipate.
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Old 04-03-2019, 10:39 PM
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My rule of thumb was not to soak longer than 10 minutes. Remember orchids have photosynthetic roots, so longer than that is a impedance on gas exchanges.

Depending on species (thin leaf omitted (Lepanthes calodictyon)), a bleach immersion should be fine for most orchids not in the omitted group.
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Old 04-05-2019, 08:47 PM
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Default Re: Orchid Prep

If you can get it, use PhySan instead of bleach.

I usually clean mine then soak in distilled water that has been aerated for about 15 minutes to make sure anything that is attached floats off. Then PhySan at the recommended concentration. I have not had an orchid melt or lost a bloom since I started doing this.

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Old 04-05-2019, 08:50 PM
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Default Re: Orchid Prep

What orchids from what grower if you do not mind? I am trying to get terrarium orchids in Canada and not having much luck.

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Old 04-05-2019, 09:04 PM
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Default Re: Orchid Prep

To the OP,
The merits of doing diluted bleach soaks vs. using other chemicals including Physan 20 have been mentioned and discussed in other threads here, including this one.

https://www.dendroboard.com/forum/pl...ts-bleach.html

and this one.

https://www.dendroboard.com/forum/pl...ched-wood.html

There are concerns about the lasting harmful residues that Physan 20 may leave. I can only say that I personally have used the bleach method successfully and cannot speak for Physan 20 or any other chemicals and their effects.
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Old 04-08-2019, 12:42 PM
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Default Re: Orchid Prep

Quote:
Originally Posted by SoloSK71 View Post
What orchids from what grower if you do not mind? I am trying to get terrarium orchids in Canada and not having much luck.

Solo
I ordered a bunch from Tropical Gardens Orchids a few weeks ago and they are located in Vancouver. I however have not gotten any response by email from them about my order and the waiting is killin me. I'm not complaining too much however because my Spectral lights are also coming by snail-mail LOL.

Quote:
Originally Posted by Llama View Post
To the OP,
The merits of doing diluted bleach soaks vs. using other chemicals including Physan 20 have been mentioned and discussed in other threads here, including this one.

https://www.dendroboard.com/forum/pl...ts-bleach.html

and this one.

https://www.dendroboard.com/forum/pl...ched-wood.html

There are concerns about the lasting harmful residues that Physan 20 may leave. I can only say that I personally have used the bleach method successfully and cannot speak for Physan 20 or any other chemicals and their effects.
Quote:
Originally Posted by DPfarr View Post
My rule of thumb was not to soak longer than 10 minutes. Remember orchids have photosynthetic roots, so longer than that is a impedance on gas exchanges.

Depending on species (thin leaf omitted (Lepanthes calodictyon)), a bleach immersion should be fine for most orchids not in the omitted group.
Thanks guys for all the great information. At this point I think I may go the route of a 10min soak in RO water and hope for the best until I can read all the info on the bleach method. I am also attending a local orchid show 2 weekends from now so I am hoping to pick some grower's brains there about the methods.
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