RSS07DX Small Overflow Box with Backing (OPEN BOX)

An overflow box is a great way to keep the water level at a constant in your saltwater aquarium as well as increase the rate at which surface water, and the film and dust with it, is removed. CPR Aquatics are high quality, black acrylic and built in the USA. Install by using a bulkhead. Bulkhead size will determine your flow rate.

Sizes Available

• Extra Small - up to 250 GPH
• Small - up to 500 GPH
• Medium - up to 900 GPH
• Large - up to 1200 GPH
• Extra Large - up to 1600 GPH

Sizes Available

• RSS05DX - 6 3/8" L x 2 5/8" W x 3 5/8" H (Nano tank)
• RSS07DX - 5 1/4" L x 3 7/8" W x 5 1/4"H (Up to 60 Gallon tank)
• RSS12DX - 7 1/4" L x 4 1/4" W x 5 1/4" H (Up to 120 Gallon tank)
• RSS18DX - 12 1/2" L x 4 1/4" W x 5 1/4" H (Up to 200 Gallon tank)
• RSS24DX - 18 5/8" x 4 1/4" W x 5 1/4" H (Up to 300 Gallon tank)

When choosing an overflow we suggest using the largest overflow box that will fit your tank. It is impossible to oversize an overflow.