Over the years I've had a few different size head tanks. I first used a 415 gal milk tank, then I got a 200 gal also SS tank free and used that for a few years. I think that was originally used to cool milk using cold flowing spring water which entered the bottom and exited near the top. Then I ordered a 150 gal sap tank from NGMP. Even though it can hold 150 gal I rarely have more than 75-100 gal in it. My rig goes thru between 65-80 gph depending on how hard I push it. I do have it plumbed so I can recirculate from the tank outlet, back thru the RO and back into the tank. Doing that I often get to 10-12%, on one pass I only get 7-8%. I like the 150 size and will likely remain with that. Then on the ground I have 4 sap tanks, but most often only use 2, the old 415 and a 545 milk tanks. If I get moor sap, I also have a 300 gal milk tank. Then my permeate tank is a 1000 gal milk tank.
I think a 100-125 is good if you plan to stay with a 2x6 for a few years, or even a 3x8 or 2.5x10.
Last edited by maple flats; 06-12-2020 at 09:23 AM.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.