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Thread: .5% sugar. Why?

  1. #1
    Join Date
    Dec 2010
    Location
    Michigan (near traverse city)
    Posts
    472

    Default .5% sugar. Why?

    I have 1200 check valve taps on vacuum. In 2016 my sugar never got above 1.5. THis week, my sugar was .5. I ran the vacuum all week. WTF?
    3x12 drop flue.
    1000 taps on 24 inches of vacuum, and 200 buckets.
    Bought a used springtech 500 GPH RO
    Shooting for 29" of vacuum, less than 5 taps per line, and 2 quarts per tap.
    https://www.facebook.com/pages/Lown-...4713586?ref=hl

  2. #2
    Join Date
    Feb 2016
    Location
    Daniels, WV
    Posts
    26

    Default

    No answer, but a similar problem. We have about 45 taps on vacuum pump and about 125 on natural vacuum 3/16" lines (total of 7 lines). Sugar has been low all season. At the beginning of the last run the sugar ranged from a low of 0.6 to a high of 1.2 depending on which line we checked. By the end stage of the run, several of the lines were down to 0.4. Note we have 90%+ reds with only a few sugars.
    10 taps in 2015
    65 taps in 2016
    177 taps in for 2017
    new Homemade RO
    2' x 4' Hobby Evaporator

  3. #3
    Join Date
    Feb 2012
    Location
    Birdsboro PA
    Posts
    1,326

    Default

    Sap may run without a freeze on vacuum. It takes the freeze thaw cycle to recharge the sugar in the sap.
    first year 2012 50 taps late season made 2 1/2 gals.

    2013 2x6 homemade arch 180 taps. 20 Gals.

    2014 40 on 3/16 gravity 160 on buckets.

    http://omasranch.wix.com/omasmaple

  4. #4
    Join Date
    Feb 2017
    Location
    Byron Center, MI
    Posts
    73

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    Several of us were talking about the differences between our bush sugar content and one thing we found to be consistent in low sugar content for us was the soil our trees were in. It seemed those that were in sand had the lowest sugar content. 1.4-1.8 never over 2.0 and those in heavy soil, mostly clay had 2.3 and higher. Just our anecdotal evidence.

  5. #5
    Join Date
    Dec 2010
    Location
    Michigan (near traverse city)
    Posts
    472

    Default

    I have a full time day job. I had to let the sap sit in the tanks for 5 days. Could bacteria have eaten the sugar? I have consistantly had 2% for the last 10 years from this woods.
    3x12 drop flue.
    1000 taps on 24 inches of vacuum, and 200 buckets.
    Bought a used springtech 500 GPH RO
    Shooting for 29" of vacuum, less than 5 taps per line, and 2 quarts per tap.
    https://www.facebook.com/pages/Lown-...4713586?ref=hl

  6. #6
    Join Date
    Feb 2013
    Location
    Sebago, Maine
    Posts
    217

    Default

    Early sap typically runs low sugar, if its an early year for you it may be running lean yet. It's been 50+ all week here, and we've held off tapping until more seasonally temps come back. We seldom run below 3%, but being 2-3 weeks early I'm certain we'd run low if we tapped right now.
    Greene Maple Farm Sebago, Maine
    7 Generations of Maple Syrup
    http://www.facebook.com/?ref=logo#!/...01122259971904

    Phillip View Farm
    Sebago, Maine
    30 Highland Cattle
    2 Alpacas, numerous pigs
    Chickens, lots of chickens
    http://www.facebook.com/atgreenetrac...hillipViewFarm

  7. #7
    Join Date
    Jan 2006
    Location
    Oneida NY
    Posts
    11,564

    Default

    My sap usually runs 2.2-2.5 in the early season and then falls as the season gets late to about 1.7 or 1.6. This year my best has been 1.7 and so far my low has been 1.5. It is just a low sugar year from where I sit.
    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.

  8. #8
    Join Date
    Mar 2011
    Location
    Maine, NY.
    Posts
    282

    Default

    Same here. I boiled down darn near 100 gallons of sap and only got 1 gallon of syrup back. I blame myself for not using my refractometor prior to boiling. In years past this bush is usually right around 3%, so I didn't bother to check it first. Now I wish I had.

  9. #9
    Join Date
    Feb 2016
    Location
    Peru, Maine
    Posts
    1,057

    Default

    Quote Originally Posted by Atgreene View Post
    Early sap typically runs low sugar, if its an early year for you it may be running lean yet. It's been 50+ all week here, and we've held off tapping until more seasonally temps come back. We seldom run below 3%, but being 2-3 weeks early I'm certain we'd run low if we tapped right now.
    We did the same, going to tap next weekend and we'll find out at the end of the season if it was a good idea to wait or not. Trees were running this week.

  10. #10
    Join Date
    Mar 2011
    Location
    Potsdam in far northern New York
    Posts
    775

    Default

    Maybe your vacuum has turned the trees into a soda straw, and you're just sucking groundwater. My bucket bush reads 3.5

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