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 No crawl off 
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Joined: Thu May 18, 2017 1:55 pm
Posts: 8
Location: Hamburg
Post No crawl off
Hey,
I'm having a problem with my bin, as almost all grubs are deciding to pupate in the bin rather than leaving it, as you can see on the photo. I had very good crawl off when I did not use any drainage material, however the bin was a stinky wet anaerobic mess. Then I added coconut coir, which got rid of the smell in a few days, but the larvae like it so much now they won't leave. I already flooded the bin for one hour up to the top of the substrate, but it did not induce any crawl off. How long do I have to flood it, so I get good crawl off?? I don't want to drown them. Is it possible to have too much drainage material in proportion to food?


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Sun May 28, 2017 3:39 pm
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Joined: Mon Mar 21, 2011 3:26 am
Posts: 214
Location: Durban, South Africa
Post Re: No crawl off
1. Pupae crawl around the periphery of the bin, looking for a way out.
Ramps like this are much more effective. In other words, don't leave a gap.

2. As a rough guess, how many grubs do you have in the bin?
If it's only a few hundred, they've got no incentive to crawl off.


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Mon May 29, 2017 12:37 am
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Joined: Thu May 18, 2017 1:55 pm
Posts: 8
Location: Hamburg
Post Re: No crawl off
PeteB wrote:
1. Pupae crawl around the periphery of the bin, looking for a way out.
Ramps like this are much more effective. In other words, don't leave a gap.

I know it's far from optimal, but in the beginning it worked satisfactory.

PeteB wrote:
2. As a rough guess, how many grubs do you have in the bin?
If it's only a few hundred, they've got no incentive to crawl off.

Right now, probably just a few hundred. That's very interesting, I didn't know this would play a role. Thanks for pointing that out.


Mon May 29, 2017 6:14 pm
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Joined: Sun Nov 06, 2016 8:05 pm
Posts: 20
Post Re: No crawl off
Also, it's easier for them to climb out if the bedding they're in is moist. I can't tell for sure, but yours looks pretty dry. I've found they can easily climb vertically in a new (very smooth) bucket if they're wet. Not if they're dry.


Tue Sep 19, 2017 9:03 pm
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