shrimp and co2

[jimbo]

I have a lot of rcs and amano shrimp in my 75 gallon tank. I cranked up my co2 to help with bba and now I don't see the shrimp like I used to and I found one dead amano and three dead rcs in recent days. Also, one dead otto. The rest of the fish all just seem fine. What I learned with these forums is that the shrimp that I have are just beasts, and that you can hardly kill them. Is this just a coincidence or could it be the co2? Also, tomorrow I'm doing a water change and I was going to do the Excell thing also for the bba. Am I just worrying about nothing?
Jimbo

[Biollante]

Hi,

Pressurized CO2 injection is a big killer, I suspect second only to ammonia.

When increasing CO2 do so gently, patiently.

Biollante

[jessicapilon]

wij gebruiken ook co2 bij de garnalen en dat gaat prima als je er maar voor zorgt dat de co2 niet teveel oploopt. een co2 van tegen de 20mg kunnen ze wel hebben. Wij hebben vuurtjes en groene babaulti s. groetjes John

[ArnieArnie]

wij gebruiken ook co2 bij de garnalen en dat gaat prima als je er maar voor zorgt dat de co2 niet teveel oploopt. een co2 van tegen de 20mg kunnen ze wel hebben. Wij hebben vuurtjes en groene babaulti s. groetjes John

Don't think they understand Dutch here... :p (most of them)

[jimbo]

Hey Arnie, since your in The Netherlands do you think you could translate for me what Jessicapilon said? I'm pure Dutch but I can't speak it or read it.

[Florin Ilia]

"We also use co2 in shrimp and that's fine if you only ensures that the CO2 rises too much. of CO2 from the 20mg they have. We have fires and green babaulti s. greetings John"

http://translate.google.com and you can speak many languages :)

[ArnieArnie]

"We also use co2 in shrimp and that's fine if you only ensures that the CO2 rises too much. of CO2 from the 20mg they have. We have fires and green babaulti s. greetings John"

http://translate.google.com and you can speak many languages :)

Hahaha funny translation... I also use CO2 in shrimp :P

Anyway what he was trying to say is that they use CO2 in a shrimp tank without any problems, aslong as you don't use to much (<20 mg). There shrimp are fine.

I would say go with the advice from biollant! Becarefull not to overdue it. I run 24/7 CO2 + shrimp. Also goes fine, but I don't have that much light so I keep my CO2 output low, just really steady.
And if you do crank it up make sure you surface water is moving around to get O2 to balance it out, just not splashing all over!

[jimbo]

Thanks everyone, I'm just really new to using the computer, so please bear with me I'm kinda teaching myself as I go.

Jimbo.

[priv_sim]

What are the signs of too much co2 on shrimps? (excluding death :confused:)

[dutchy]

hiding, moving slow, trying to climb out of the water. Most shrimp will tolerate CO2 up until 30 to 35 ppm.

[alexbn024]

While I do not have much experience with keeping shrimps at 30-35ppm of CO2, yet, I also did found out that they can be quite sensitive to rapid CO2 increase. I am on my 6th day of introducing CO2 into 20G shrimp(Amano + CRS) tank.

I was fortunate not to loose any shrimps yet, but two of my baby mosquite rasboras perished to exactly the same problem as you described. As Biollante mentioned, you need to be very careful with CO2. At the beginning I was only able to safely run CO2 for 2-3 hours and cut it off as soon I saw any unusual behavior. Luckily, I started on Friday so I had all weekend to monitor the behavior of my critters.

My original indicators were mosquito rasboras. As soon as CO2 was at critical level, they start to "gasp" near the surface. But, after two days, rasboras adopted to CO2, and Amanos become my 2nd indicator. As Dutchy pointed out, my Amanos tried to climb out of water in a very specific place, near bubbles from airstone. Ottos tend to lay motionless at higher then normal level of CO2, Cardinals go into hiding, close to the gravel, etc.

Even after 6 days, I can't run CO2 for more then 1bps, to compensate, I decided to add half of a Excel does(hopefully it was a correct decision).