Thanks for the tip I shall try the mother flask idea as well as the 3M
"Active Strips" round band-aids.
As for the powdered aluminum my use for it has fallen by the wayside I was
going to use it to make cellular concrete (the alauminum causes the
concrete to foam up as it hardens according to a PBS show) but I used
concrete blocks stuffed with foam insulation with 2 inchs of blue foam on
the dirt side. It worked as I heated a zone 5, 8X10 homemade greenhouse
with a 1500 WATT oil filled heater till I went to hot water heat.

Thanks again
Grow well and bloom magnificently
dusty