Potassium and Yamato Shrimps

[Timothy Tan]

Does anyone know whether overdosage of potassium is terminal for yamato shrimps? I just had a few die on me, and they all turned red, like they were cooked. Only think I added was Brighty K, which is a potassium fert, to help the plants grow.

[PeterGwee]

No way.

Regards,
Peter Gwee

[Shadow]

this is what I read from Barr report

K+ has a very wide range before it becomes toxic.
Likely over 100-200ppm range.

http://www.barrreport.com/co2-aquati...ight=red+plant

[Timothy Tan]

Ok, then what will cook the shrimp? I just lost 4 in 2 days

I have dosed micro and macro nutrients (seachem) but I don't think it should affect the shrimps. Will nitrates kill the shrimps?

[Salphur]

Hi,
are your yamato shrimps new additions to the tank? Or have they been around for a long time already?


Cheers!

[Timothy Tan]

Some there for 3 weeks, some new. Could be the new ones that died.

[Plantbrain]

I've added well over 100ppm of K+, no issues ever.

If you think about it, where do they breed and grow out?
Brackish water............

Probably not the salts...........

Regards,
tom Barr

[Timothy Tan]

What is tolerance of the shrimps to nitrites? I had a very small spike last week which could account for the deaths (around 0.3mg/l). Still monitoring the nitrite levels.. but seem to be stablising here. Does it take longer for nitrite bacteria to develop?

[Plantbrain]

Well, they are extremely sensitive to NO2's, that.... not NO3 or K+.... is far far more likely the issue.

Also suggest a new set up tank that's not well established, poor plant biomass and growth.

None of which would suggest potassium/K+.

Folks kill shrimp all the time and many do not keep planted tanks.

Regards,
Tom Barr