Note that there are restrictions on some products, and some products cannot be shipped to international destinations. We can ship to virtually any address in the world. Limited Time - FREE SHIPPING ON ALL ORDERS OVER $29! Most orders will ship the same or next business day of when you place the order. Slip the tubing over the opposite end of the PVC pipe.Slide a PVC Pipe into the 3/4" ID opening of the bulkhead.To Install Nano Box Overflow Box (Manufacturers Recommendation) As with any overflow system, it is critical to maintain constant water levels by means of a top-off system or by regular top offs. The main water pump in the sump will then return the water back into the aquarium and continue this cycle. The water level in the Pre-filter Box will rise until the water flows into the Exit Tube where it will empty into the sump. If the level of water in the aquarium increases, it will enter the Intake Box and will then siphon into the Pre-filter Box. NOTE: No air must be allowed to enter the U-tube if the siphon is to be maintained. The siphon is now primed and water will automatically reach an even level in both boxes. You may need to add more water to the boxes as you do this. Be sure the ends of the U-tube are fully submerged so that no air can enter. This is done by bending the airline and inserting it into the U-tube. Suck the air out of the U-tube using clear airline tubing (1 ft) until the U-tube is full of water. Then carefully fill the Pre-filter Box with a cup or two of water. The siphon is started by first filling the aquarium until water flows into Intake Box. Replace old or worn nylon screw and wing nuts to ensure secure placement of overflow box.Īssemble the parts making sure that the water exits from the Intake Box through the U-tube and into the Pre-filter Box. NEW Replacement Nylon Screw Set includes (2) Wing Nuts, (2) Threaded Screws, and a Thumb Screw. Includes: U-tube, cylinder (round) foam, nylon screw and wing nuts, and pre-filter box. Gravity-feed system eliminates the need for complicated drilling or aquarium modifications. Use these easy-to-install overflow boxes to transport aquarium water to under cabinet sumps, refugiums, or wet/dry filters. Quality overflow boxes feature bulkhead fittings for secure and convenient installation. If you find bubbles forming, it could be a variety of things from too little flow to microbubble build up.Bulkhead fittings allow convenient and secure aquarium plumbing Once the siphon is created it is important to keep air bubbles from forming in the U-tube. Once all the air is removed the airline tubing must be removed or submerged. You may be required to fill either the internal or external box with more water as the siphon is created. Replace the U-tube into the overflow making sure that the airline tubing is at the apex of the bend and using a pump like a Tom's Aqualifter to suck the air out of the tube until it is replaced with water. Remove the U-tube and place one end of the airline tubing into the U-tube. Start by filling the aquarium until water flows into the intake box, and then using a cup fill the external box with water until the U-tube end is covered. Just lower the overflow box onto your aquarium and then connect your favorite type of plumbing to the included 1" bulkheads.Ĭan be done with a 1-foot piece of airline tubing. Hang on back overflows do require more monitoring and safety precautions to be in place, but can be completely reliable if installed properly and maintained regularly. Installation only takes a couple of minutes, and the PF-1000 only requires 3" of clearance outside the tank to drain water down to a sump, refugium, or wet/dry filter. In most cases, we would recommend drilling your aquarium and using an internal overflow like the Eshopps Eclipse, but in some situations, a HOB style overflow may be the best option. Traditional overflows require you to drill holes in your aquarium where Eshopps PF HOB overflows use a siphon to draw water over the wall of the tank without any modifications to your aquarium. Adding a sump to a tank will allow you to hide equipment and while adding water volume making your tank more stable. Add an overflow to any aquarium with Eshopps PF series of hang on back overflows.
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