An apparatus for acclimating an aquatic organism, contained in a partially water filled plastic bag, to an environment in an aquarium includes an aquarium frame comprising a first portion exterior to the aquarium and a second portion interior to the aquarium. A bag holder is operable to hold a top of the plastic bag in an open position. The bag holder is positioned on the second portion where the top of the plastic bag is above a top level of water in the aquarium and a substantial portion of the plastic bag is below the top level. A dripping cup is operable to release water obtained from the aquarium into the plastic bag. The dripping cup is joinable to the first portion, whereby the aquatic organism is acclimated to a chemistry and temperature of the water in the aquarium.
