C.L. Industries Hydrazzo® HYDGLFSTMBLU 80 lb Gulfstream Blue Polished Pool Finish. Hydrazzo® was the first polished finish in the industry and has set the gold standard in pool finish innovation. A silky smooth texture, combined with the proven durability of exposed aggregates, are two prime features of this state-of-the-art pool finish. With unique color selections and natural variegated appearance, Hydrazzo® compliments all poolscape designs. This polished pool surface creates a finish that is naturally resistant to spot etching, topical stains, permanent scale and algae adhesion. Hydrazzo® combines naturally beautiful coarse graded crystalline and colored marbles, along with white Portland cement and a host of other performance- enhancing ingredients. The result is the ultimate pool surface coating.