drip method on crs failed

[Xianghao]

hi,
Yesterday i bought 10 crs and was acclimatising them for 2 hours using the drip method with aeration. But by the end of the 2 hours all the shrimps were belly up so i just netted them in to the tank.
Luckily the next morning most of them recovered and only 2 of them did not make it, but i observed that the rest were pretty lifeless, probably recovering from the traumatically failed acclimatization. I cross my fingers and hope they survive.
Meanwhile any experienced shrimpers can share the probable cause of this bad experience?

[hyun007]

hi,
Yesterday i bought 10 crs and was acclimatising them for 2 hours using the drip method with aeration. But by the end of the 2 hours all the shrimps were belly up so i just netted them in to the tank.
Luckily the next morning most of them recovered and only 2 of them did not make it, but i observed that the rest were pretty lifeless, probably recovering from the traumatically failed acclimatization. I cross my fingers and hope they survive.
Meanwhile any experienced shrimpers can share the probable cause of this bad experience?

I assumed your drip method is drop by drop at a slow speed?
Did you float the bag in the tank for at least half an hour before you do the drip method?
Was there any moss for the shrimp to hang on? (less stressful for them to find something to cling on)

I do not think they will need the aeration.

How long have your tank been cycled?
Water parameter checked?

[hellomyfriend]

where and who you bought the shrimps from?

[magpie]

Is your tubing contaminated?

[nasty12]

did you put your shrimps into another container and then use drip method? perhaps tell us the steps that use did and what you use.

[Xianghao]

thanks for all your replies. let me try to recall what i did in detail.

first i floated the bag unopened in the tank for 2 hours, then i took out the bag, opened it and transferred the shrimps and half of the bag water into a container and used the drip method with aeration. i used aeration because i was afraid if the drip method took so long there may be lack of oxygen.
anyway i dripped with the tank water pretty slowly, perhaps 1 drop per 2-3 seconds, and dripped until the water level tripled in about 2 hours. but by then the shrimps were all concussed already, bellied up but still moving, so i quickly netted them up and just put them in the tank straight.

as of now i can count 7 shrimps in my tank alive and kicking, but they aren't really active and they are not eating the shrimp food i gave (stuff that my sakura shrimps in another tank would push and shove to get to).

anyway my tank is 2 feet at 24-25 deg C, ada amazonia 2, undergravel filtration with eheim 2213 with filter pad and biohome, cycled for 2 weeks.
i wonder where the problem lies, but on hind sight and after seeing another thread, i think i should have dripped the water into the same bag which is floating in the tank water to maintain same temperature. but still, what could have caused the shrimps to concuss i am still clueless, luckily i bought only the low grades so far :X

[hyun007]

What is the water parameter?

[magpie]

Aeration inside a small container, current may be too strong for them to handle. Maybe they are in a state of shock that's why they are berried up in the container.

[Wolfgangs246]

IMHO, your drip method should have worked fine so I don't think it's your technique. You may need to investigate the tubing, container and water for the source of the problem.

Correct me if I am wrong, but a newly established tank should be cycled for more than 2 weeks to ensure establishment of beneficial bacteria. Also that same tank should have undergone 1-2 WC of at least 50% of the tank water to remove all harmful chemicals like ammonia, nitrites and nitrates?

This goes back to some of the other bro's queries about your water parameters as mid to high grade CRS are notoriously sensitive about their water parameters. If you have them, take some parameter readings and post them up here and the more experienced bro's will probably be able to identify your problem.

[Xianghao]

IMHO, your drip method should have worked fine so I don't think it's your technique. You may need to investigate the tubing, container and water for the source of the problem.

Correct me if I am wrong, but a newly established tank should be cycled for more than 2 weeks to ensure establishment of beneficial bacteria. Also that same tank should have undergone 1-2 WC of at least 50% of the tank water to remove all harmful chemicals like ammonia, nitrites and nitrates?

This goes back to some of the other bro's queries about your water parameters as mid to high grade CRS are notoriously sensitive about their water parameters. If you have them, take some parameter readings and post them up here and the more experienced bro's will probably be able to identify your problem.

yeah maybe i should have checked the tubing and container for contamination. the tank has been cycled for 2 weeks plus with filter containing established bio media, with half water changes every few days, so i assume that the cycling part should be fine. water parameters last measured was nitrate <10ppm, ammonia & nitrite no problem, pH i didnt really worry about since i was using ada amazonia 2 i assumed it would bring the pH to the appropriate level.

after the ordeal i'm abit scared of getting higher grades for now, my heart will jump if this kind of stuff happens on higher grades.

[Xianghao]

Aeration inside a small container, current may be too strong for them to handle. Maybe they are in a state of shock that's why they are berried up in the container.

i think my container was big enough, i used a bathing scoop. haha i think u mean belly up, not berried up right? one is a good sign, one isn't.. :P

[Cristiano]

Cycle tank at least a month, or ammonia and nitrate will be a problem.

[Xianghao]

thanks for replies. i will monitor my water parameters some more before buying more crs...