Shrimp trap killed shrimp?
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Old 05-18-2013, 06:07 PM   #1
sinthesis
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Shrimp trap killed shrimp?


Been trying to move all my shrimp, catching them in a water bottle trap with shrimp food. Have done it about 5 times, and had no problems. Last night I put the trap in and watched them for about a half hour, they were lively, normal. This morning (about 11hr later, which has always been fine before) I find a trap full of dead shrimp. None alive. What the heck did I do wrong? I feel awful
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Old 05-18-2013, 06:12 PM   #2
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you left it in for 11 hours. if you use a trap only leave it in for about an hour at a time. i find it alot safer to just use a net to move shrimp. yes it takes longer but you wont lose shrimp that way
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Old 05-18-2013, 06:12 PM   #3
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You pretty much suffocated them. Maybe they just couldn't take it anymore

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Old 05-18-2013, 07:00 PM   #4
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I also only use a net for transfers. I can see it being a complete pain in heavily planted tanks, which in case I have a spare bare-bottom tank for shaking off plants to find the occasional peewee hitchhiker.

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Old 05-18-2013, 08:09 PM   #5
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A small confined space in the tank can turn toxic quickly when theres quite a few shrimp trapped within. Remember they are delicate creatures. There is nothing rushed that wont end up in deaths.
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Old 05-18-2013, 08:22 PM   #6
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It could also have been the shrimp food clouding the water.
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Last edited by jspk; 05-18-2013 at 08:22 PM.. Reason: shrimp food not fish food
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Old 05-19-2013, 01:44 PM   #7
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Often this is due to suffocation. No real water movement within the confined area to carry O2.
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Old 05-19-2013, 09:12 PM   #8
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Did your previous 5 attempts happen when it wasn't as warm? Warmer water has less ability to hold O2 and the water in the trap doesn't circulate much.
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Old 05-20-2013, 01:06 AM   #9
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Once I left a trap in overnight by mistake. The next morning, I found shrimp and fish dead in the trap but the scuds were still alive and eating well.
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Old 05-20-2013, 03:11 AM   #10
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Hmm. It was warmer this time than last time. But it sounds like I just lucked out doing it like I had been doing it. I've been doing some thinking after reading your responses. The first few times I used a round bottle made of that cheap thin plastic so it wanted to fold and didn't seal really well. It would fall apart and some shrimp would escape as I'd try to get it out. So I "upgraded"--the last couple times I used a square bottle that sealed so well it was hard to get it to sink, thinking it would be more effective. I didn't understand about there needing to be movement for CO2. Stupid on my part I suppose.

I do have a shrimp tank and don't believe there are too many left. I think I will remove the rocks and (fake) plants from the tank and try to catch them that way. And if I fail, I'll try the round bottle again, just for a couple hours at a time.

Thanks so much for your help. Had no idea how sensitive I was about these things, crying over shrimp. You learn about yourself in the oddest ways, eh?
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Old 05-20-2013, 03:15 AM   #11
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Try something mesh next time if that is your only option. Just cut out the middle of the bottle and use some plastic mesh adhered with aquarium safe silicone. Think window screen material.
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Old 05-20-2013, 03:22 AM   #12
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What a great solution! If I can't net them I'll definitely try that, I have the supplies already!
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Old 05-20-2013, 03:27 AM   #13
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why not just get a breeder box/net and just make a intake/funnel for it. http://www.fish.com/item/lees-aquari...er-box/710219/ simple and safe
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