Modular Marine 800gph vs 1200gph overflow

dopey · Jul 17, 2019

Hi!

Currently building a new tank. The display tank will be 140L(36G) and the sump will be 86L(22G). Total system volume 60 gallons.

I am looking at the Modular Marine overflow and will need to order from the USA. (If anyone knows a good EU dealer for overflows please let me know. I've not found any of the common brands yet. Only HOB overflows).

The overflow needs to sit on a 39cm(15.35in) wide section. The 800 gph would fit much better, being only 8" while the 1200gph is 11.875" .

Is 800gph OK for this size tank?
OR
Is there a better 'nano' sized alternative that can fit in such a small space?

Any comments appreciated!

crusso1993 · Jul 17, 2019

@Sallstrom and @Lasse are both from Sweden and very experieneced. Hopefully, they'll chime in and give you suggestions.

dopey · Jul 17, 2019

crusso1993 said:
@Sallstrom and @Lasse are both from Sweden and very experieneced. Hopefully, they'll chime in and give you suggestions.

Thanks Lasse was nice enough when I joined to give a list of sites he used. Unfortunately just not seeing an overflow selection. Only see HOB by tunze or aqua medic .

Going to call the local shop once they open to see if they have suggestions beyond what their site shows.

After more reading I think 800gph is good for this tank. Thatll give me more than 10x possible turnover, which is more than enough. Additional mp10 or equivalent in the display tank if I want more flow there.

Modular marine was kind enough to send their hole diagram via email so I can draw up the holes needed for the glass shop.