Sump Filter - What you running?

[Luckykeeper]

I'm setting up a low-tech planted discus aquarium and want a robust filtering system to keep everything thriving, especially with regular water changes. I have a 5ft sump and here's my plan:

Section 1 - Mechanical filter pad tower for trapping debris.
Section 2 - A large egg crate box filled with Seachem Pond Matrix for biological filtration, topped with two bags of Seachem Purigen for extra chemical filtration.
Section 3 - Thinking of creating a dense refugium using Anubias or a similar plant, but I'm unsure if this concept translates well from saltwater to freshwater.
Section 4 - Heaters and a removable filter floss insert for polishing the water when needed.
Section 5 - Twin return pumps feeding two separate spray bars for efficient water circulation.

I'd love to hear your thoughts on this setup, particularly the refugium idea. Coming from a saltwater background, I'm curious to know if this concept works in freshwater. What are your experiences with sumps? What's worked for you, and what hasn't?

[Luckykeeper]

Re: Sump Filter - What you running?

Might've misposted this in the wrong area. If a mod could shift this to filtration, I'd appreciate it. Cheers.