What is the diameter of the opening? I hope to use this with a fluval filter
1536647
The diameter of the opening in the center of the filter is 1 inch. The total filter diameter is 2 5/8 inches.
302543
It hangs on the side of the tank your opening it will fit unit is about 8" wide
2262483
Make sure to check the dimensions of your existing aquarium to ensure this will fit in it, but otherwise it "should work. I'm always a fan of having a little extra filtration capacity, since if the filter is rated for 15 gallons (as this one is) that's assuming its clean and operating normally. Getting the PF25 would give you a little extra filtration and flow in your tank. Those are just my thoughts. I really liked the idea and concept of this filter and it seemed to work fine for me, I just couldn't get it to fit under my aquarium shroud, so I ended up returning and got a secondary fiter to support the primary one. UV is definitely a good thing for your aquarium though!
599746
This filter is 4 inches wide. I'm guessing that the slot for your filter is not that wide, since you've been using 1-inch wide filters; but you can check. I change my filter once or twice a year.
54369
The diameter of the opening is 2.5 inches. They are good quality for the price.
1995268
I'm not sure, my filter measures 20" across, but I had to cut down the tube to make it work for me so it is probably made for a larger filter than mine. My guess is it will work, but it is just a guess.
1383301
The opening is 7/16 inch, the straws that come with it are quite wide. I use stainless steel straws and they are quite a bit narrower than the opening.
1479140
The opening is large enough for a Brita filter, but not for the housing that holds the filter. Perhaps there are filters that don't require any housing, but I am not familiar with that.
318395
I have a 46 gallon aquarium. The front is bowed out and the open area is in the middle of the top. My filter takes up about 2/3 of the space behind my aquarium and sticks out about 2 inches.
1509222
Hagen makes the Fluval line of pump filters. They should have parts search by model I suspect, but if the unit is not that old (less than a couple years) the ring gasket may not be set in the groove correctly before clamped down.
661308
The opening for my filter is 16 inches vertically and 5 1/4 wide. Filter size is 16x5 so I think you need a different filter.
1930326
Depends on the size puff the cartridge.I hv the fluval 305 , the cartridges are approximately 2"x 4" inches. You mite be able to flatten them out and it should be wider. But that's as much as I can tell you , hope it was helpful.
1997670
Unfortunately I cannot help here. I had bought this for an aquarium just to see if it would help. It was too large. Good luck with your searching.
1770847
I am not sure how to measure the opening. I use it to feed my fish. It is about the size of a silver dollar )maybe a bit larger is circumference). the opening is cut at a diagonal when I feed my fish I gently tap on it, it and they know to come near the opening to eat.
1645189
In absolute terms, the diameter of the opening on mine is 0.496". Hope this helps.
1129319
the undergravel Filter system Fit a 20 gal. Aquarium if u want to buy this item
52585
The filter is almost exactly 8" wide. I'm really pleased with it. Hope that helps.