When should farmers replace the cooling pad wood-shaving/paper materials, and when does hard water scale reduce cooling pad efficiency?

Evaporative cooling pads are critical for maintaining a thermoneutral climate inside closed layer houses during hot summer months. The efficiency of these pads is highly dependent on water quality. In regions with hard water (high calcium and magnesium carbonates), mineral scale builds up rapidly, clogging the air pores and forming a hard white crust over the cellulose paper or aspen wood-shaving fibers. This scale buildup peaks within 2 to 3 months of continuous operation, reducing cooling efficiency by up to 50% and restricting exhaust fan air flow. To prevent this, cooling pads must be treated monthly with scale-dissolving chemicals (such as sulfamic acid), and the paper media replaced every 3 to 5 years (aspen wood-shavings replaced annually in spring). Engineering guidelines are in the Poultry Encyclopedia, heavy-duty replacement cooling pads and descaling chemicals are sold on Poultry Plaza, live mandi rates are updated on Poultry Rates, and climate-controlled farms are listed on Murghi Mandi.