Scaletec Plus is the first pourable surface, tile, and equipment descalers that works without acids. Prevents and removes stains especially iron. High performance swimming pool calcium descaler, iron stain, and scum remover-preventative. First pourable product that removes hard water buildup throughout pool surfaces, tiles, and all equipment without scrubbing and acids. Pour directly into pool only. Highly effective in preventing iron, copper, and manganese stains. Powerful Synertec formula provides long lasting, affordable protection year-round with just small monthly application.