>
Hi everyone!
I’ve always hated how bulky internal filters and heaters ruin the aesthetics of a clean aquascape. After searching for a sleek solution and not finding exactly what I wanted, I decided to engineer my own Modular Rear Sump system.
It’s a 6-stage flow design that I’m currently running on my 70L (18.5 gal) tank, but the capacity is enough for up to 200L (53 gal). Here’s the breakdown of the chambers:
- 2mm intake grid (shrimp-safe).
- Massive 25cm Perlon chamber (the water clarity is insane).
- 3x Triple Bio-media baskets for ceramic rings.
- Dedicated K1 Moving Bed chamber to keep oxygen levels high.
The DIY part: As a maker, I modeled the entire aquarium scene, including the glass panels. I found that being able to open the file in a slicer and use the ruler tool to get exact glass measurements made the build so much easier.
I’m really happy with how the internal cable management turned out—everything is tucked away.
I’ve documented the project and shared the engineering files on Cults3D for anyone interested in the technical specs or building something similar. (Search for "Elite Rear Sump" or check the link in the comments if you're interested).
I’m curious—for those using K1 in small/medium sumps, have you noticed a big difference in nitrate processing compared to static media? Would love to hear your thoughts on the modularity!
Check out the project here: https://cults3d.com/pt/modelo-3d/casa/elite-rear-sump-system-high-flow-6-stage-modular-filtration
Would love to hear your thoughts on the K1 chamber placement or any feedback on the modularity!