Great information to know, thanks for sharing.
The thought of "drop tubes" never even crossed my mind. I'll need to keep that in bank for future consideration
Cheers
Black Walnut tapping
2021 - 3 trees 5 taps enough to boil a sample.
~ 2 acres, 35+ mature Black Walnut
2022 - 30 Southern Ontario Walnuts tapped, 69 spouts.
650 litres (143 Imp gals) on sap bags, 14 litres (3 Imp gals) walnut syrup on turkey fryer.
2023 - 35 trees tapped, 28 mech vacuum & 7 on gravity. Propane fired custom evaporator, 2'x2' divided pan, 2'x1' preheat pan.
882 litres (194 Imp gals) mechanical & gravity vac turned into 18.25 litres (4.8 Imp gals) syrup off my DIY evaporator