HCA: Hermit Crab Association

I picked up a sample pack of shredded coconut from a Hermit Crab food supplier here in Ontario.
Honestly, I didn't expect it to be such a hit. Every time I put the stuff out in the terrarium, it would be gone the next morning.

Because of its popularity, I'd like to pick up some locally.
I went to the Bulk Barn to pick up a bunch of it because they sell it in bulk, but I stopped when I read the ingredients:
Coconut, sodium metabisulphite. Contains sulphites.
(Source: http://www.bulkbarn.ca/en-ca/product/ba ... conut.html)

Is this hermit crab safe?

There is shredded coconut out there that is 100% coconut with no preservatives, but it's harder to find. That is hermit crab safe. I've never used anything with any additives before for the hermits. (Actually, I also hate the stuff with additives because it tastes horrible. The natural stuff is so good I can down a bag like potato chips!)

My local health food store will probably have some too.
Hopefully, it's without the preservatives!

I buy this http://www.target.com/p/let-s-do-organi ... ic+coconut

I've been seeing Wild Oats organic coconut at Walmart. The only ingredient is coconut.