Ammonia, window cleaners, and also other severe cleaners can result in harm and should result in crazing. Acrylic sheets are a strong material necessitating small routine maintenance. Should any adhesive or sticky substance are available in contact with the surface, use ONLY items meant especially for acrylic treatment and cleansing. https://ucacrylic.com/acrylic-fish-tank-aquarium/acrylic-swimming-pool