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Old 05/06/2017, 09:43 AM   #1
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Sk8r's Avatar
Join Date: Feb 2006
Location: Spokane WA
Posts: 34,442
Blog Entries: 55
COPPER SENSITIVITY: some don't tolerate it well.

The list of aquatic species it may kill outright:
invertebrates of all sorts
live rock bacteria
angel fish
dragonets: mandarin, scooter blenny, etc.
eels are iffy.

Considerations when using copper:
1. is the species sensitive? if so, look for another med.
2. is the fish in a weakened condition already? Unless copper is the ONLY treatment for the ailment, try to find another med.
3. is the fish already refusing food? Copper depresses appetite.
4. do you have absolute regulation of evaporation in the treatment tank? Evaporation can raise the dosage too high.
5. is there carbon in your filter? Carbon will remove the med.
6. is it a clown with a nem? Once treatment is done, let the clown recover for a week and build back his slime coat: copper strips it, and he could be stung to death by his own nem.

Note that the slime coat is a fish's natural protection against parasites and infection. It functions much like our own outer skin. Once copper treatment is done, take measures to build the fish's general health back up.


Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low.

Current Tank Info: 105g AquaVim wedge, chromis, royal gramma basslet, tailspot blenny, ocellaris clown, yellow watchman, chestnut turbo snails, bristleworms, couple of hermits.

Last edited by Sk8r; 06/28/2020 at 10:47 AM.
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