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Best on the market
I had a pool maintenance business for 25 years. I used Swimtrine 20 of those years. It contains copper, and copper and algae do not like each other. No pool that I ever took care of got algae. When I would get a new pool that had algae that was one of the first products I added. I have used a lot of others when I first started and NONE work as good as the Swimtrine algaecide.

Swimtrine Plus
Great! It takes care of any algae in my pool. I have been using this product for about 5 years. It works!
Excellent Product
I have waited for a couple of months because I wanted a high degree of confidence in this product before I recommended it to others. I have tried many products to tackle both green and yellow algae in the past, all have failed. The reason they failed is because unlike Swimtrim, they all require a chlorine shock/boost in order to be effective. As soon as the chlorine is used up which can be 17mins in strong sunlight, the previous products lose their effectiveness and the algae returns. Swimtrim uses copper and requires no chlorine shock when added, so if the chlorine level drops, no problem, it continues to protect your pool. I might add that on first application you will need to use a whole 16oz bottle, after that it's just 3oz per 10,000 gallons every 2 weeks, so very economical. I just use a 5 gallon bucket, fill it with pool water, add the 3 ounces, and then pour slowly back into the pool round the whole edge of the pool.
Good
Good
Great Product. Really Works.
Great product. Really works.
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