What are the ingredients?

ACTIVE INGREDIENTS: Copper Sulfate pentahydrate 1.02%; 1-dimethylurea 0.51%OTHER INGREDIENTS: 98.47% NOTE: Ingredients taken from package label.

How long until you start to see the water clear up?

The length of time it takes to clear up the algae will depend on a number of things such as the overall water quality of the pond, the stocking level, your filtration, the amount of organic matter in the pond, and so forth. The more organic matter, the softer the water, the less effective and more time it will take. In a situation such as this, we recommend a partial water change initially, prior to dropping the blocks in. For more assistance, please contact the Tetra Consumer Relations Team at 1-800-526-0650.

Is the block supposed to disolve? its been in my pond for two weeks and still the same as when it went in.

No. That's why I like it. It gets smaller over time and takes about 3 - 4 weeks to disappear.

will the Tetra Pond Anti Algae Block work in a 40 gallon aquarium that has 2 turtles that are 30 years old. Will it harm them.

I use it in my goldfish pond. And my box turtles have access to it. No harm has come to either animal as long as the water is aerated. This product removes the oxygen from the water.

ASIN	B0034CAYDO
Assembly required	No
Batteries required	No
Best Sellers Rank	#44,130 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #105 in Water Garden & Pond Treatment
Customer Reviews	4.4 4.4 out of 5 stars (1,167)
Department	Unisex-Adult
Import	Made in the USA
Included Components	1 x Controls Algae Growth In Ornamental Fish Ponds
Is Discontinued By Manufacturer	No
Item Weight	5.6 ounces
Item model number	16735
Manufacturer	TetraPond
Product Dimensions	3.75 x 2.25 x 5.5 inches
Specific instructions for use	Active
Warranty Description	See label

Pond Block 4 Count, Controls Algae Growth In Ornamental Fish Ponds (16735)

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