I think that there are actually reef-keeping emotions coming out on this question. There's, on the one hand, the opinion that this just isn't a real threat of any significance here because some tanning lotion might have gotten on the bucket. While bleach doesn't have any "grease cutting" ability, detergent does, so a slight was with some mild detergent/water solution would resolve that and the bleach would certainly kill any kind of organic residue that might...but probably...isn't even there.
On the other hand, there are those that believe that it just "worth the gamble," and there might well be some danger that would be wise to simply avoid. This position argues that we must not take any chances with the health of the fish/inverts that we keep.
Isn't that how it's breaking down here? But shouldn't we decide for Keith whether $30 is a lot to him of not? Keith, please post your 2009 tax returns.