Review on 💧 Kosdeg Copper Pitcher 68 Oz - Boost Health Now: Hydrate, Reduce Sugar & Experience the Pure Copper Benefits! by Miriam Mendez

Black spots found in the glass. The water comes from water filters installed at the same time as the purchase of this product. I bought two copper water bottles at the same time I bought this product. Water bottles are ok. I use the same water from the water filter to the office. But no black marks on water bottles. Why black spots on the pot? I thought about returning the product, but the return period has expired.