>http://www.beesource.com/forums/showthread.php?290641-My-recipe-method-for-sugar-blocks

Will the use of aluminium trays combined with the acid of the vinegar subject the bees to more aluminium than is good for them.  I saw a suggestion the other day that aluminium is giving bees their version of Alzheimers.

Best wishes

Peter 
52°14'44.44"N, 1°50'35"W

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