New Filter Boxes
After getting the much larger Sequence Dart pump I was really thinking my filter boxes were going to be too small. And also since they were plumbed into the QO pumps with much smaller plumbing I'd have to re-do them anyhow. But that’s OK, I'll set them aside for a future smaller tank that might use the 4000's.
I debated different sizes and shapes and ultimately decided on a similar box but one just slightly not as long and a little deeper. I am going to vertically orient them and put two back to back in each sump. So there will be 4 of them to spread the flow across. So basically the same design as before, but twice as many of them:

I cut the top out with a dremel and spiral saw bit.

I liked these boxes since they had a real deep lip around the lid that would help seal between the floss and lid.

Marking where I need to cut out for the plumbing.

Cut it out with a hole saw bit in my hand drill.

After gluing the endcap on, I started drilling holes with my drill press into the end which will be inside the filter. This was then cut with a little bit of pipe sticking out and fed through the hole in the box (from the inside) and secured by placing a coupling on the outside part.

More potsrubbies. These boxes hold 1/3 more scrubbers, plus there are two more boxes now.

These boxes weren’t quite as square as the others, took a lot of trimming to get the eggcrate to fit right.

Floss cut to fit top. I also made a simple template the shape I need out of cardboard so I can cut them out easier next time. Sorry blurry pic.

Completed filter box.

One box installed. They are just press-fit into the wye, hopefully that will suffice. You can also see the co2 line I run through a small hole in the cap of the wye.

Two boxes installed per each sump.

Another view of the filter boxes installed in the sump tank.
I think I am finally done with gosh darn plumbing!!! This better work! lol.
After getting the much larger Sequence Dart pump I was really thinking my filter boxes were going to be too small. And also since they were plumbed into the QO pumps with much smaller plumbing I'd have to re-do them anyhow. But that’s OK, I'll set them aside for a future smaller tank that might use the 4000's.
I debated different sizes and shapes and ultimately decided on a similar box but one just slightly not as long and a little deeper. I am going to vertically orient them and put two back to back in each sump. So there will be 4 of them to spread the flow across. So basically the same design as before, but twice as many of them:
I cut the top out with a dremel and spiral saw bit.
I liked these boxes since they had a real deep lip around the lid that would help seal between the floss and lid.
Marking where I need to cut out for the plumbing.
Cut it out with a hole saw bit in my hand drill.
After gluing the endcap on, I started drilling holes with my drill press into the end which will be inside the filter. This was then cut with a little bit of pipe sticking out and fed through the hole in the box (from the inside) and secured by placing a coupling on the outside part.
More potsrubbies. These boxes hold 1/3 more scrubbers, plus there are two more boxes now.
These boxes weren’t quite as square as the others, took a lot of trimming to get the eggcrate to fit right.
Floss cut to fit top. I also made a simple template the shape I need out of cardboard so I can cut them out easier next time. Sorry blurry pic.
Completed filter box.
One box installed. They are just press-fit into the wye, hopefully that will suffice. You can also see the co2 line I run through a small hole in the cap of the wye.
Two boxes installed per each sump.
Another view of the filter boxes installed in the sump tank.
I think I am finally done with gosh darn plumbing!!! This better work! lol.