CU limits in aquatic environment.

[Martin]

hi

Just wondering if there's a 'set' CU limit for our tanks. I mean inverts are probably the most vulnerable, so whatever limit they have is pretty much the limit in our tanks.. atleast if you have shrimp..

is it.. 0.1ppm?

0.5ppm is over the top as far as I know..

 

[Tom Barr]

Plant copper herbicides suggest 1ppm for killing aquatic weeds, 0.4ppm is the limit for algae, but still keeps the aquatic weeds alive in field studies.

Shrimp are an entire other level and are species specific.

You might search there. Freshwater Shrimp Toxicity Copper

Crypts can handle higher levels as can many rossette and rhizome/larger root structure plants.

Stem plants die quickly.

Regards,
Tom Barr

 

[Martin]

thanks for that..

I've used copper to kill lots of algae at work. Moss is fine @ 2ppm
I've also used it to stop crypt melt.