I have a custom design for an external overflow that I need built. I had gotten a quote some time ago from Modular Marine but it looks as though they are struggling to keep up with current orders. Does anyone have any other recommendations?
hmmm..i built my internal overflow because I wanted to bottom drill. What is the design like? I bet you could take a stab at it. I bought a sheet of Acrylic and used my table saw for cuts. Because it was internal I made a job and molded the acrylic with a hit gun to the jig. Would an external just be a box that you bottom drill the acrylic? Also using a simple calculation and can size cuts by gph.
I just got a custom-made one from Modular Marine last week (66" long with 2 external boxes), start to finish about 3 months but that included 2 rounds of template shipping to match existing holes drilled by the tank manufacturer.
Very happy with the outcome so far.
Exotic Marine Systems is another that makes custom-sized overflows but I wasn't thrilled with the way they do their internal slots. I think they would have more business if they gave customers a choice. They have explained the advantages in YouTube videos and I get it but I feel it's easier to lose fish/shrimp with their system. Perhaps I'm wrong, but I wanted not to worry with an old-school design.