The Orchid Doctor Articles under the Heading Evaporative Coolers

Evaporative Coolers Comments
EVAPORATIVE COOLERS: Algae Control -- Use Physan 20. A78-495 -- How to Build One Cost of materials was less than $100, not including fan; instructions; refer to A75-584; general information on function and maintainance. A61-541+; A64-377+; A74-396+ 0
EVAPORATIVE COOLERS: In Louisiana High humidity limits the effectiveness. A78-309 0
EVAPORATIVE COOLERS: Used Throughout the U.s.a. The fan and pad cooling system is the most popular. A80-356 0
EVAPORATIVE COOLERS: Use of Copper Sulphate on the Wet Pad Use 2 ppm. in the water periodically, A78-403 0

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