I just purchased a used 72 gallon bowfront aquarium with overflow, a penn plax Cascade 1200 canister filter and a 2 bulb industrial h5 high output fixture. The fixture doesn't come with a plug or hanging point so I will probably have to switch it for something else. More immediately, the pump comes with what looks like half inch tubing. The tank came with a 1inch overhead with what looks like a Dursa intake on top and a sawed off PVC on bottom. The PVC underneath is glued on and the standpipe is loose fitted. The other hole has a 3/4 inch threaded bulkhead. There is a pvc going from this bulkhead to a lokline return. It is slightly too tall for the notch for it in the weir, so had it come with a top, it wouldn't fit. The bottom side of this bullhead has what looks like a 90 degree fitting for 3/4 inch tubing. The threads are worn completely through.
For the moment, I have filled the tank to about 4 inches below the weir, unscrewed the 3/4 in bullhead and stuck both tubes of the filter through here, over the top of the weir and into the tank to test for leaks and pump function. I used the included mesh screen for the intake and spray bar for the return. The whole thing has gone 24 hours without issue.
At this point I am not clear on what to do next. My first tank was years ago, a 20 long with deluxe hood and hang on back filter. This tank is something else. I thought that maybe I got the wrong filter because of the diameter mismatch. But Fluval's new 704, the biggest on their site is also half inch tubing. What's going on here and how do I fix it?
For the moment, I have filled the tank to about 4 inches below the weir, unscrewed the 3/4 in bullhead and stuck both tubes of the filter through here, over the top of the weir and into the tank to test for leaks and pump function. I used the included mesh screen for the intake and spray bar for the return. The whole thing has gone 24 hours without issue.
At this point I am not clear on what to do next. My first tank was years ago, a 20 long with deluxe hood and hang on back filter. This tank is something else. I thought that maybe I got the wrong filter because of the diameter mismatch. But Fluval's new 704, the biggest on their site is also half inch tubing. What's going on here and how do I fix it?