Help with plumbing a 240 gallon tank

[CA-Delta]

I'd go a whole different direction.
I would use the two top/end holes as skimmers/drains feeding the external pump which supplies the Mech/Chem. filters and returns through the two bottom holes at each end to a RUGF.
Similar to this :

Use the center bottom hole as a supply for your airstone(s).
If you choose to utilize the sump, drill and plumb it as a separate system .

Edit: Don't get so caught up in reusing the tank the way it is drilled that you create a problem in the future. Drilling acrylic is simple.

 

[Nim Dibbley]

I'd go a whole different direction.
I would use the two top/end holes as skimmers/drains feeding the external pump which supplies the Mech/Chem. filters and returns through the two bottom holes at each end to a RUGF.
Similar to this :

Use the center bottom hole as a supply for your airstone(s).
If you choose to utilize the sump, drill and plumb it as a separate system .

Edit: Don't get so caught up in reusing the tank the way it is drilled that you create a problem in the future. Drilling acrylic is simple.

i had never heard of an RUGF. thats interesting....

I definitely would like to use the wet/dry filter and i am pretty much sold on that form of filtration although i have never used it compared to a canister filter, RUGF, etc.

now there is more to ponder/research....

 

[CA-Delta]

Check out old CHOMPERS threads you'll get an education.
Just like I did . I done drank the Koolaid.
Long live Reverend Jim... err..Ron... Oh hell....whatever.