Effects of high potassium on tank

[jasonrusso]

I just got ICP test results back today. Both my tanks have high potassium and low iodine (so I suspect the salt as I use the same salt on both tanks). What is the effect of high potassium? Does it affect fish at all?

 

[Larry L]

Most people recommend running potassium around 400 ppm, some people run it higher (up to 500-ish) since it seems to improve coloration of certain SPS. Some of the salts intentionally mix up with higher than 400 ppm for the same reason.

 

[jasonrusso]

Most people recommend running potassium around 400 ppm, some people run it higher (up to 500-ish) since it seems to improve coloration of certain SPS. Some of the salts intentionally mix up with higher than 400 ppm for the same reason.

Mine is in the 500 range. No issues? How about with fish?

 

[Larry L]

Some good info in this thread: https://www.reef2reef.com/threads/how-bad-is-460-ppm-potassium.324416/

 

[alexanderthefishlover]

Ok so now I’m reading a lot about this and I’m using seachem vibrant sea and I have SPS torch, hammers and octospawn is this bad for them!

 

[Randy Holmes-Farley Verified Community Expert]

I don’t know if it is a problem, but I would not recommend keeping potassium that high.