My first year I went to a Chinese Restaurant and got a bunch of 5 gal cooking oil jugs. I got 3-6 jugs each day. They were time consuming to clean, but worked well. To use them I put a hole (heating a rod and melting thru worked better than drilling because a few broke when drilling). Then I ran small tubing systems, of 2-3 taps into each jug. At first I had issues with jugs blowing over and sometimes the line pulling out of the hole in the cap. I solved that by attaching a pinch clamp on the tube under the cap and made the lines just long enough so they held the jug upright. To empty them I used 2 methods. I had several extra jugs, if any jug was over half full I swapped it with an empty one, if less than half full, I dumped it into one I had on a carrier on the back of my tractor. I just unscrewed the cap and carried it to my tractor To dump one I made a custom funnel, it was made out of pvc pipe, the spout was 1.5" (it fit down in the jug and maybe 4-5" long, on top I had a 1.5" x 4" (or maybe it was 3") coupling and a piece of the larger size in the top. On that top piece I used a dremel tool and carved out a slot just big enough to fit the jug neck in. That way I could dump far faster without losing sap. For the jugs that were about half full, I did either way, change or dump depending on which seemed better at the moment. My tractor had a 3 point hitch carry all that I made a box to fit and bolt on. It carried 12 jugs. I then drove the 4x4 tractor out to my SUV and loaded the full jugs into the back. Usually that had serviced all jugs, on high flow days I made a second trip for more.
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.