After an apparent hiatus from the aquarium hobby (I say hiatus because of the “re-release” verbiage used in the promotional material), the One Shot single dose coral treatment from CoralRX is back and better than ever. These tiny little packets serve as a single dose coral dip that treats a wide variety of common issues (see the list below). And now they are in a much easier to use packet. Previously, the One Shots came in small glass vials, which weren’t always the easiest to open or the safest to handle MORE: CoralRX One Shots Are Back in Action After Re-release