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Overflow Boxes: CPR Overflow Boxes
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We highly recommend viewing The CPR Aquatics CS Overflow video on the CPR Aquatics Web site.
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CPR CS50 Siphon Overflow
CPR Aquatic CS50 Siphon Overflow
Our Price: $75.99
In Stock

We highly recommend viewing the CPR Aquatic CS Overflow video on the CPR Aquatic Web site for a general overview of all the CPR Aquatic overflows.

CPR Aquatic CS50 Siphon Overflow:
  • New grated overflow
  • Max. Flow Rate: 300 GPH
  • Outflow Size: 3/4" bulkhead
  • Depth Needed Behind Tank: 3-7/8"
  • Overflow Box Width: 6"
  • This version does not include the lid or the Aqua Lifter Pump
CPR CS50 Siphon Overflow
CPR Aquatic CS50 Deluxe Siphon Overflow w/ Lid & Aqua Lifter Pump
Our Price: $96.49
In Stock

We highly recommend viewing the CPR Aquatic CS Overflow video on the CPR Aquatic Web site for a general overview of all the CPR Aquatic overflows.

CPR Aquatic CS50 Siphon Overflow:
  • This version DOES include the lid and the Aqua Lifter Pump
  • New grated overflow
  • Max. Flow Rate: 300 GPH
  • Outflow Size: 3/4" bulkhead
  • Depth Needed Behind Tank: 3-7/8"
  • Overflow Box Width: 6"
CPR Aquatic Lid for CS50 Siphon Overflow
CPR Aquatic Lid for CS50 Siphon Overflow
Our Price: $7.29
In Stock

The CPR Aquatic Lid for CS50 Siphon Overflow.
CPR CS90 Siphon Overflow
CPR Aquatic CS90 Siphon Overflow
Our Price: $97.99
In Stock

We highly recommend viewing the CPR Aquatic CS Overflow video on the CPR Aquatic Web site for a general overview of all the CPR Aquatic overflows.

CPR Aquatic CS90 Siphon Overflow:
  • New grated overflow
  • Max. Flow Rate: 600 gph
  • Outflow Size: 1" bulkhead
  • Depth Needed Behind Tank: 4-1/2"
  • Overflow Box Width: 7-1/4"
  • This version does not include the lid or the Aqua Lifter Pump
CPR Aquatic CS90 Deluxe Siphon Overflow w/ Lid & Aqua Lifter Pump
CPR Aquatic CS90 Deluxe Siphon Overflow w/ Lid & Aqua Lifter Pump
Our Price (price includes free shipping!) $120.49
In Stock

We highly recommend viewing the CPR Aquatic CS Overflow video on the CPR Aquatic Web site for a general overview of all the CPR Aquatic overflows.

CPR Aquatic CS90 Siphon Overflow:
  • This version DOES include the lid and the Aqua Lifter Pump
  • New grated overflow
  • Max. Flow Rate: 600 gph
  • Outflow Size: 1" bulkhead
  • Depth Needed Behind Tank: 4-1/2"
  • Overflow Box Width: 7-1/4"
CPR Aquatic Lid for CS90 Siphon Overflow
CPR Aquatic Lid for CS90 Siphon Overflow
Our Price: $8.49
In Stock

The CPR Aquatic Lid for CS90 Siphon Overflow.
CPR CS100 Siphon Overflow
CPR Aquatic CS100 Siphon Overflow
Our Price: $109.99
In Stock

We highly recommend viewing the CPR Aquatic CS Overflow video on the CPR Aquatic Web site for a general overview of all the CPR Aquatic overflows.

CPR Aquatic CS100 Siphon Overflow:
  • New grated overflow
  • Max. Flow Rate: 800 gph
  • Outflow Size: 1" bulkhead
  • Depth Needed Behind Tank: 4-1/2"
  • Overflow Box Width: 10"
  • This version does not include the lid or the Aqua Lifter Pump
CPR Aquatic CS100 Deluxe Siphon Overflow w/ Lid & Aqua Lifter Pump
CPR Aquatic CS100 Deluxe Siphon Overflow w/ Lid & Aqua Lifter Pump
Our Price (price includes free shipping!) $129.29
In Stock

We highly recommend viewing the CPR Aquatic CS Overflow video on the CPR Aquatic Web site for a general overview of all the CPR Aquatic overflows.

CPR Aquatic CS100 Siphon Overflow:
  • This version DOES include the lid and the Aqua Lifter Pump
  • New grated overflow
  • Max. Flow Rate: 800 gph
  • Outflow Size: 1" bulkhead
  • Depth Needed Behind Tank: 4-1/2"
  • Overflow Box Width: 10"
CPR CS102 Siphon Overflow
CPR Aquatic CS102 Siphon Overflow
Our Price: $113.99
In Stock

We highly recommend viewing the CPR Aquatic CS Overflow video on the CPR Aquatic Web site for a general overview of all the CPR Aquatic overflows.

CPR Aquatic CS102 Siphon Overflow:
  • New grated overflow
  • Max. Flow Rate: 1,200 gph
  • Outflow Size: Two 1" Bulkheads
  • Depth Needed Behind Tank: 4-1/2"
  • Overflow Box Width: 9-3/8"
  • This version does not include the lid or the Aqua Lifter Pump
CPR Aquatic CS102 Deluxe Siphon Overflow w/ Lid & Aqua Lifter Pump
CPR Aquatic CS102 Deluxe Siphon Overflow w/ Lid & Aqua Lifter Pump
Our Price (price includes free shipping!) $138.59
In Stock

We highly recommend viewing the CPR Aquatic CS Overflow video on the CPR Aquatic Web site for a general overview of all the CPR Aquatic overflows.

CPR Aquatic CS102 Siphon Overflow:
  • This version DOES include the lid and the Aqua Lifter Pump
  • New grated overflow
  • Max. Flow Rate: 1,200 gph
  • Outflow Size: Two 1" Bulkheads
  • Depth Needed Behind Tank: 4-1/2"
  • Overflow Box Width: 9-3/8"
CPR Aquatic Lid for CS100 Siphon Overflow
CPR Aquatic Lid for CS100 & CS102 Siphon Overflow
Our Price: $9.29
In Stock

The CPR Aquatic Lid for CS100 Siphon Overflow & CS102 Siphon Oveflow.
CPR CS150 Siphon Overflow
CPR Aquatic CS150 Siphon Overflow
Our Price (price includes free shipping!) $127.99
In Stock

We highly recommend viewing the CPR Aquatic CS Overflow video on the CPR Aquatic Web site for a general overview of all the CPR Aquatic overflows.

CPR Aquatic CS150 Siphon Overflow:
  • New grated overflow
  • Max. Flow Rate: 1,600 gph
  • Outflow Size: 1-1/2" Bulkhead
  • Depth Needed Behind Tank: 6-1/8"
  • Overflow Box Width: 9-3/8"
  • This version does not include the lid or the Aqua Lifter pump
CPR CS150 Siphon Overflow
CPR Aquatic CS150 Deluxe Siphon Overflow w/ Lid & Aqua Lifter Pump
Our Price (price includes free shipping!) $146.89
In Stock

We highly recommend viewing the CPR Aquatic CS Overflow video on the CPR Aquatic Web site for a general overview of all the CPR Aquatic overflows.

CPR Aquatic CS150 Siphon Overflow:
  • This version DOES include the lid and the Aqua Lifter Pump
  • New grated overflow
  • Max. Flow Rate: 1,600 gph
  • Outflow Size: 1-1/2" Bulkhead
  • Depth Needed Behind Tank: 6-1/8"
  • Overflow Box Width: 9-3/8"
CPR CS202 Siphon Overflow
CPR Aquatic CS202 Siphon Overflow
Our Price (price includes free shipping!) $137.19
In Stock

We highly recommend viewing the CPR Aquatic CS Overflow video on the CPR Aquatic Web site for a general overview of all the CPR Aquatic overflows.

CPR Aquatic CS202 Siphon Overflow:
  • New grated overflow
  • Max. Flow Rate: 1,500 gph
  • Outflow Size: Two 1" Bulkheads
  • Overflow Box Width: 9-3/8"
  • This version does not include the lid or the Aqua Lifter pump
CPR Aquatic CS202 Deluxe Siphon Overflow w/ Lid & Aqua Lifter Pump
CPR Aquatic CS202 Deluxe Siphon Overflow w/ Lid & Aqua Lifter Pump
Our Price (price includes free shipping!) $155.99
In Stock

We highly recommend viewing the CPR Aquatic CS Overflow video on the CPR Aquatic Web site for a general overview of all the CPR Aquatic overflows.

CPR Aquatic CS202 Siphon Overflow:
  • This version DOES include the lid and the Aqua Lifter Pump
  • New grated overflow
  • Max. Flow Rate: 1,500 gph
  • Outflow Size: Two 1" Bulkheads
  • Overflow Box Width: 9-3/8"
CPR Aquatic Lid for CS150 CS202 Siphon Overflow
CPR Aquatic Lid for CS150 & CS202 Siphon Overflow
Our Price: $9.69
In Stock

The CPR Aquatic Lid for CS150 Siphon Overflow & CS202 Siphon Oveflow.
Tom Aquarium Products Aqua Lifter Water & Air Pump
Tom Aqua Lifter AW-20 Vacuum Pump
Our Price: $15.39
(Out of Stock)

The Tom Aquarium Products Aqua Lifter is recommended for any application with the CPR Overflow Boxes. The Aqua Lifter will help the Overflow Box to maintain siphon. The Aqua Lifter is a unique one-of-a-kind vacuum pump designed to lift water with its diaphragm and flappers. Note: The Aqua Lifter is not a water circulation pump, it just assists with the siphoning of water out of the tank with an overflow box. You still need a circulation pump to return water to the tank.
Tom Aquarium Products Replacement Diaphragm for Aqua Lifter Pump
Tom Aquarium Products Replacement Diaphragm for Aqua Lifter Pump
Our Price: $3.99
In Stock

The Replacement Diaphragm for the Aqua Lifter Pump