Best Pentahydrate

SeaKlear 90-Day Algae Prevention & Remover 1 Qt

90-days no algae guarantee (when used according to instructions in balanced pool water).
Kills and prevents blue-green, green, yellow and black algae.
Non-foaming, non-staining (when used according to instructions in balanced pool water).

Controls most species of algae like filamentous, string algae and swimmers itch.
Most effective when cast out on top of thick floating algae mats.

BioGuard SilkGuard Technology actually softens the water.
SunShield Technology offers protection from the sunlight SilkGuard Technology actually softens the water.
SmartGuard Technology helps the tablets last longer than traditional chlorine tablets.
Algae killing crystals help stop algae before it starts.
Trichloro-s-triazinetrione: 91.57%, Copper Sulfate pentahydrate (metallic copper equivalent 0.25%): 0.99% Other Ingredients: 7.44%, Available Chlorine: 84.%.

99% PURE COPPER SULFATE PENTAHYDRATE. Bright blue copper sulfate crystals. Also known as cupric sulfate, bluestone, blue copper, copper II sulfate or blue vitriol. Useful in both agricultural and non-agricultural settings..
THOUSANDS OF USEFUL APPLICATIONS. Farmers, property managers, homeowners, and others are discovering copper sulfate and its countless indoor and outdoor uses. We promise our pure copper sulfate will deliver results, no matter how or where you use it..
INCREASES COPPER CONTENT IN SOIL. Copper sulfate has been known to be used as a fertilizer to increase the copper content of soil for agricultural purposes..
USEFUL FOR ETCHING METALS. Leave a lasting imprint on soft metals like zinc, mild steel, and aluminum with copper sulfate. Create beautiful marks left on metal without a significant investment of time or money..

3 Pounds of Greenway Biotech Copper Sulfate Crystals Pentahydrate 25% Copper- 100% Water Soluble.
Fungicide Kills Algae / Kills Roots (Sewer Treatment).
For Use in Hydroponics and Aquaponics Systems.
For Use in Ponds and LakesDescriptionDo you have algae problems? Are your sewer pipes clogged? Your toilet flush doesn't work? Does your beautiful pond/pool looks disgusting and full of algae? Or are you just looking for a cool science project for your children? We have the perfect solution for you. You could always use harmful chemicals such as Drano but such chemicals not are only harmful to humans but they end up in under ground water and eventually in the ocean and caused many problems to living fish and plants. So why use them?!!! Copper Sulfate is a natural replacement that not only fixes your problems but also helps the environment by keeping harmful chemicals out of it. Greenway Biotech, Inc. Copper Sulfate could be used to open up your pipes, toilet, and clean up your ponds/pools and make them look beautiful again without hurting the eco-system. Greenway Biotech, Inc. Copper Sulfate could also be used to make your own natural fungicide such as Bordeaux Mixture, which the recipe could be found under the "How To"....