Ultima® Total Control is a fast-acting shock and algaecide in one formula. It combines the anti-algae power of chlorinating compounds and chelated copper for immediate and extended relief from black, green and yellow algae. It shock treats at the same time, leaving your pool crystal clear and contaminant Free®. It's unique granular formulation requires no pre-mixing - it can be added directly to your pool, saving you time and the hassle of dealing with messy liquids
Keeps the water clear for weeks and gives it a nice bluish color. I bought three bottles of the granules at a very reasonable price. Even though I initially bought it in my city, the store no longer carries it, so I was thrilled to find it here. Thanks !!
For the last month the pool has been crystal clear with no algae anywhere. At these temperatures, 95+, this is a great result