![]() The other gasket should be placed between the external box and the bulkhead nut. Installation Tip - When installing the bulkhead gaskets we highly suggest placing one between the inner overflow box and the aquarium. That lets you upgrade to a larger pump or tank in the future, with an added safety benefit of being able to handle additional flow if one drain gets clogged or restricted. In most cases, we will recommend using an overflow that is +1 sized for your application. Selecting the right overflow for your tank can be confusing but it is a pretty simple formula, just take the total flow produced by your return pump and select an overflow that can handle that overall flow rate, and still be able to fit inside of your aquarium. The guide helps you set the perfect water level for your aquarium and then lets you know exactly where to drill your hole(s). It is required to drill your aquarium with the Eclipse overflow but drilling is fairly simple and with the included glass drill bit and drill guide. Water can flow through the 1/4" teeth in the wet-side of the overflow, and then through the included bulkhead into the external box that holds additional bulkheads to let the water drain down into the sump. The internal/external design for the Eshopps Eclipse Overflow Boxes creates a minimalistic design inside the aquarium, extending less than 1.25" inside the aquarium. The DIY project only takes a few minutes to complete and compared to HOB style overflows, the Eclipse has a fail-safe design that includes a minimum of two drain bulkheads for a Herbie method of plumbing. If you find bubbles forming, it could be a variety of things from too little flow to microbubble build up.The Eclipse aquarium overflow system consists of a slim black box that is mounted inside of your tank and a clear external box that mounts outside of your tank, to transport water down to your sump with as little noise generated as possible. 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. The most common problems are noise and reliability. 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. beananimal Janu12 min read Background There are many types of overflow setups for use in aquaria, most have inherent design flaws or shortcomings that we just accept and live with. Just lower the overflow box onto your aquarium and then connect your favorite type of plumbing to the included 3/4" bulkhead.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-Nano only requires 2.5" 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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