We do have a Prototype of a 4in Random Flow Generator that we made for a local public aquarium - its a monster nozzleI did on my previous system and loved them. Want to use them on my current system but they don't sell 2 inch, 2 1/4, and 2 1/2 ones which are the sizes I require. I wish they or someone else would though.
This one was tuned for a 150GPM, and the results where stunning in a 16K body of water. I wish I could show the video, but they asked that i didn't share it publicly.
Our larger production models (1.25, 1.5 and 2in) can handle and convert a ton of flow. You can see a video we made a few years back using an Abyzz A400 where we tested each of the larger sizes
Depending on the amount of flow you can supply the outlets, it may be advantageous to reduce them down right at the outlet. For the best results you want to meet or exceed the suggested Optimal Flow rating for each RFG.
I would be interested to see your needed application, if you have sometime - give me (Antonio) a call and lets discuss it.
1-623-233-6908