Here are some pictures of my overflow It will not hold a siphone I don't know why. the concept design is the same as the one on my other tank and it holds a siphone. I siphone one of the tubes on the double overflow and it pulls all the water out of the black part that is in the tank and it losses siphone before I can even start trying to siphone the other tube.
Please help I don't want to have to buy a new overflow. I think I would drain the tank and drill it before buying another overflow, but I don't want to do that.
Here is the info when I bought it. notice it says it will not loose siphone if power goes out. I guess that is because it never gets siphone.
Brand New ESHOPPS PF-1200 Dual Overflow Box. 1,200 gallons per hour. Comes with everything you need to get it working.
Two U-Shaped Siphon Tubes
Two Sponge Pre Filters
Male & Female Adaptors - Bulkheads
Nylon Screws & Wingnuts
Pre Filter Box
Dimensions: 10"L x 3.25"W x 10"H
Rated upto 300 Gallon Aquarium
Very Similar to the Lifereef overflows which sell for $199.00!
This overflow box has a great design, built with quality in mind.
Due to it's great design, it will not loose the siphon if your power goes out.
These are brand new and in their boxes!!!