Guys - I'm just finishing a 120 tap 1/2" gravity system on a new bush. Ran the numbers for putting a "guzzler" system in. The numbers say, that the gravity system, averaging .25 g of syrup per tap per season over a 5 year period has a lower unit (sap) cost than the "guzzler" averaging .45 g of syrup per tap per season. I'm pretty confident my gravity system will average over .25 per season. No idea if a guzzler would increase the average yield to .45 per season over 5 years. Happy to send you the spreadsheet. Bruce
Bruce Treat
825 Sugar Maple Taps
3/16 w/ DSD .225 Spiles
H2O RO
H2O 2.5 X 8
Bow, New Hampshire