After using various products, I found a pond block that can be used in my non-pond pond. While not ideal, it suppressed most algae during the summer. I like to use a block a week and forget about it. I found that you have to find the best spot for the block. Initially, I placed it where water constantly flowed over it. This caused the tablet to melt in about a day. After moving the block to where there was less water, it took about 7 days. Overall I am satisfied with this product.
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