modifying Euroreef to recirculate

[mark]

I've used the common type bulkhead that you get from Hydroponic stores on various sized containers, without problem.

Measured a small one I've got, it's for 1/2" tubing (barbed) with a bulkhead face of 1.25". Looking at it against my ASM G3, could see using it on the skimmer without overly distorting the chamber. A hydroponic store might even have smaller but still sufficient for a skimmer recir mod.