Eshopps AEO11015 Overflow Boxes Pf-1200 for Aquarium Tanks

Works Awesome for my 75 gallon tank. I previously bought cheapest one didn’t realize I needed more GPH it’s a learning experience.

Très robuste De très bonne qualité

Arrived in good condition, needs a mod done to remove bubble collection at top of bend like the Tunze u tube

Very good!

I purchased this overflow for my 75-gallon reef tank. I modified it to implement a Herbie system by replacing one of the standpipes with a longer one to act as my emergency overflow and I installed a gate valve on the output of the other standpipe to restrict the flow enough to create a siphon in the main drain. The provides completely quiet operation. The standpipe modification was easy since the opening accepts a 1" PVC pipe exactly. Also, I am using just one of the siphon tubes since my flow rate is approximately 450 GPH. The problem I ran into with this product was very unexpected. When using the supplied nylon bolts to attach the plastic weir box to the acrylic overflow box, the holes in the weir box did not line up with the slots in the acrylic weir box! I had to drill a hole 1/8" over from the existing 1/4" hole. I am surprised I have not seen other posts complaining about this since it does not seem like this would be a one-off problem. Another comment I want to make is that when installing the flanges, the rubber washers must be in the inside flange side, not the outside nut side. I saw posts of complaints of leaks here. If the washer is place on the outside, water seeps between the flange and box and then flows down the threads, sneaking inside the rubber washer and dripping out the nut. I am not implying this was the reason for leaks in all the other posts, just something to watch out for when assembling. One picture shows the hole mismatch requiring me to drill a hole that lines up with the slot. The other picture is the modified standpipe for the Herbie modification.