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6199 Hydro Crystalation Station,[1][2] released as 6199 Aqua Base in the United Kingdom,[3] is an Aquazone Hydronauts set released in 1998.


This set includes 5 minifigures, 2 large transparent green shield pieces, and a few sea animals, including sharks, octopi, and mantarays. The set contains a total of 472 pieces. The set contains 3 Hydronauts (each one equipped with flippers) and 2 Stingrays. There are two vehicles within this set, one being a large Hydronaut submersible-the other being a small Stingray scout craft. The set comes with a raised baseplate, on which the base rests. It contains many yellow and dark-grey pieces, with all of it's translucent pieces being of a dark-greenish colour. It contains many silver pieces, including silver harpoons and crystals. There are Manta Rays, Sharks, and Stingrays swimming around, while a Hydronaut vehicle guards the base. There is a hangar in the base, accessible to the Hydronauts when a button in inside the top section is pushed. There is a sneaky Stingrays scout vehicle, similar to set 6107 Recon Ray.

The Hydronauts submarine, which comes with the base, is mostly yellow in colour. It has a dark-green cockpit, with a small amount or black thrown in. It is powered by twin propellers, and on the front are dishes which could be lasers but which could also be sonar devices. It has a carrying cage for crystals. Both of the vehicles have racks for carrying flippers (for diving).


The Hydro Crystalation Station is the base of the Hydronauts in the Aquazone universe. In the battle between the Hydronauts against the Stingrays, the base of the Hydronauts remains strong.

LEGO Description This is a description taken from Shop-At-Home January 1998 Catalog. Do not modify it.

This is it - the super-advanced, Hydronaut techno station deep beneath the sea! And this is where the Hydronauts and Stingrays battle it out for the secret stash of crystals. The Stingrays try to sneak in by breaking into the base. If they're caught they'll be locked in the special prison... forever? Check out the amazing features like a special suction hose, a barred door that keeps sea creatures out, a working crane, and a big expedition vessel. Includes two Stingrays and three Hydronauts. Ages 8-12. 472 pieces.

Minifigures Included


See also

External links