HCA: Hermit Crab Association

Thanks for the quick reply and all the info! From keeping marine inverts long ago, I know copper can be deadly to them and I wasn't aware that Hermits were not as sensitive to copper, (in proper amounts ) That's great to hear that IO is safe, since it's all my local pet shop carries. I will certainl...

Howdy all! I was wondering what the best salt water mix is for Hermits? I see that many are using instant ocean, however I found this article stating that there is high levels of certain metals including copper. Now I'm worried to use it. The article link is below. Thanks!!! http://www.reefkeeping.c...