So in my endless researching looking for ways to turn a 40B into a tank viable for a mandarin (one of my fav fish) I stumbled into the finnex HOB refug. I tried one out and loved how fast the pod population exploded on it and bought two more. I realized I could only fit 2 on my back pannel where I keep the light holder... so I decided to used in one of the sides instead where it would get light from the main tank. Since the two would be hob refugiums with light cycles alternative to the display tank to keep pH stable, I came across the concept of Pico tanks, and started searching for viable livestock that I could place on a 1 gallon (10.25x5.5x5 inches)refug without the dividers.This might seem pointless as to why keep something in such a small container when you could place it in the main tank... well, what about species that require little flow, cant have contact with many other species, and are better in nano tanks, but nano tanks are very unstable parameter wise? well, the flow is pretty low and the constant cycling water would keep the temperature close to the main tank and the rest of the parameters, evaporatation wouldn’t be such a quick issue since the tank would cycle water in and out constantly. What about feeding? 55 lbs of live rock in the 40 breeder + 2 hob refugiums would create a quite decent amount of pods that could be sucked in by the pump intake and cycled throughou this hob ”Pico tank” to supplement feeding. The outtake comes with a little fence that could keep them from flowing out the week current by accident.Im still trying to think out the decor (algae) that would be best for the such a set up, so any ideas or tips from dwarf seahorse keepers would be appreciated.