My Furan-2 came in individual packets (I've also seen it in plastic pills like antibiotics sometimes come in).
I might as well update my experience... The Furan-2 didn't seem to do too much for my Zoas. I think it beat the zoa pox back a bit, but it's come back (my fault for not doing additional doses). I think the main reason is I didn't use a strong enough mix. Mine was pretty weak b/c a) I'd have to buy a lot of Furan-2 to treat large rocks with zoas and b) I didn't want to risk the zoas and other life on the rocks. Also, the zoas don't seem to be affected too badly by the zoa pox - yet... I'll probably be dipping them again soon though. Good luck treating yours! Take care,
--Kyle
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