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Overflow Boxes

At AquaCave, we offer some of the best selection & best prices on overflow boxes and accessories for you marine, reef, and freshwater aquarium.
CPR’s Continuous Siphon aquarium overflow boxes provide the most efficient means of getting water to an external filter without expensive modifications to the tank. These precision-engineered aquarium overflow boxes skim water from the surface of your aquarium at flow rates up to six times greater than units with tubes. Advantages such as water level adjustment, quiet operation, fish screen, and a black top to reduce algae growth all make the CPR Continuous Siphon overflow boxes the best on the market.
Aqua Lifter Vacuum Pump
(9)
from $16.95
Aqua Lifter Suction Pre-Filter
(2)
$3.99
Internal Aquarium Overflow Boxes
CPR CS50 Aquarium Overflow Box
(1)
from $77.95
CPR CS90 Aquarium Overflow Box
from $94.95
CPR CS100 Aquarium Overflow Box
from $99.95
CPR CS102 Aquarium Overflow Box
(2)
from $107.95
CPR CS150 Aquarium Overflow Box
from $115.95
CPR CS202 Aquarium Overflow Box
(1)
from $126.95
Eshopps NANO Overflow Box, 30 gal tank
(1)
$49.95
Eshopps PF300 Overflow Box, 10-75 gal tank, Single
$56.95
Eshopps PF800 Overflow Box, 125 gal tank, Single
(2)
$64.95
Eshopps PF1000 Overflow Box, 150 gal tank, Dual
(1)
$71.95
Eshopps PF1200 Overflow Box, 300 gal tank, Dual
$82.95
Eshopps PF1800 Overflow Box, 500 gal tank, Dual
$93.95
Flexible Drain Hose with Adapters
Overflow U-Tube 1.25"
$4.95
Overflow U-Tube 1.5"
$5.95
Prefilter Foam Round, Large
(1)
$5.95
Prefilter Foam Round, Small
$4.95
Replacement Lids for CS Overflow Boxes
from $14.95

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

- CPR CS50 Aquarium Overflow Box : Flow Rate: 300gph. CS50 Siphon Aquarium Overflow Box by CPR Aquatic is rated for aquariums up to 60 gallons.
- CPR CS90 Aquarium Overflow Box : Flow Rate: 600gph. CS90 Siphon Aquarium Overflow Box by CPR Aquatic is rated for aquariums up to 125 gallons.
- CPR CS100 Aquarium Overflow Box : Flow Rate: 800gph. CS100 Siphon Aquarium Overflow Box by CPR Aquatic is rated for aquariums up to 175 gallons.
- CPR CS102 Aquarium Overflow Box : Flow Rate: 1,200gph. CS102 Siphon Aquarium Overflow Box by CPR Aquatic is rated for aquariums up to 250 gallons.
- CPR CS150 Aquarium Overflow Box : Flow Rate: 1,600gph. CS150 Siphon Aquarium Overflow Box by CPR Aquatic is rated for aquariums up to 300 gallons.
- CPR CS202 Aquarium Overflow Box : Flow Rate: 1,500gph. CS202 Siphon Aquarium Overflow Box by CPR Aquatic is rated for aquariums up to 300 gallons.
- Aqua Lifter Vacuum Pump : AquaLifter is a unique vacuum pump which is designed to pump water up to 30" at a flow rate of 3 1/2 gallons per hour. Powerful and durable function allows for many applications such as trace element dosing, drip system for reptiles terrariums, circulating pump for lizards, amphibians and for priming gravity fed siphon tubes. It is recommended to use Suction Pre-Filter with Aqua Lifter-Dosing Pump so clogging does not occur. Suction Pre-Filter removes large particles before they enter Aqua Lifter. AquaLifter Pump is recommended to be used with CPR overflow boxes to draw air out from the C-Siphon.
- Aqua Lifter Suction Pre-Filter : Pre-filter for Aqua Lifter Dosing Pump. Filters out large particles in water before entering AquaLifter.



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