The plywood tub is on recirculating water, the fry tubs float, air is weighted with ceramic insulators and the airstone is used to slowly drain water from the fry tubs back to the recirc system. First tub is Matsuyama x Itoh (Lains) 3/17/11, Matsuyama x Oishi (Lains) 3/17/11, Bristol Shubunkin (Parker Strain) (Calico x Calico incross) 3/18/11.