Kraken Reef Evaporation Cover (Only compatible with Kraken Reef lids)Kraken Reef evaporation covers allow you to have that convertible top option. This removable solid polycarbonate piece is designed to help reduce water evaporation in your aquarium. The cover will be made from 1 4" nominal clear polycarbonate. The cover is secured in place on your lid by a machined lip around the perimeter of the cover, with the inner portion of the cover being recessed below the top of the lid. Note: Condensation may accumulate on