The 300 external deluxe only has one intake and one discharge. The old versions have two discharge pipes and the Supermarin has two intakes. The base of the unit is covered by the bubble wrap and look just like the 300 ext on this page:

http://reefcentral.com/forums/showth...385190&page=39

For those interested in specs:

1.500 L/H air – 3000 LI/H Water
Total Height: 80 cm (31.50")
Baseplate: 32 x 50 cm 12.60" x 19.69")
Rated For: 317 - 793 gal
Power Consumption: 58 Watt Performance
Air/Water: 528 g/h - 1585 g/h


Quote Originally Posted by stangchris View Post
i thought the external bubble king has 2 pipes intake and discharge and the internal just has one. the one in the pic looks like an internal