Controlled-environment broodtank systems presently include twelve 2.1-m ³ units, six 4.7-m ³ units, one 10.7-m ³ unit and one 16.7-m ³ unit.  Broodtanks are supported by biofilters to allow recirculation of water.  Timer-controlled lighting and heat pumps are used to manipulate photoperiod and temperature to simulate artificial seasons.

[Click on any image above to view Broodstock Holding gallery.]