It was an awesome tank for sure!
I was running a GFO reactor on the 3rd port but pulled that offline and run my biopellet reactor on the 4th port. The 1st port is unused currently.
I like the design of the manifold. With the vertical design, I have to remember to close the valve to the effluent to the tank when I shut it off, otherwise, air gets into the top of the manifold and comes blasting out through my biopellet or GFO reactor. Perhaps if someone was planning to mimic this design, maybe build in an air bleed valve on the top of it so you won't have the same issue I have with it. As long as I close that 2nd valve though when I shut off the return pump for repairs/maintenance, I'm good but I don't always remember that when I need to.
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