There are several ways to wreck a moss ball. You might not want to, at first, because they’re quite charming, as far as aquarium accessories go—vivid green and damply hairy, like a Muppet that’s been through the wash. But if you choose to be merciless, you can pick from several modes of attack. You could seal it in a plastic bag and banish it to the freezer. You could submerge it in screaming-hot water for 60 seconds. You could dunk it in diluted bleach for 10 minutes, or straight-up vinegar…
