CrystalClear PondTint Blue, 16 Ounce

This is a fantastic product that does what it says it does. I have a beautiful blue tent to my water that does not harm my fish or plants. The color lasts a very long time and it only takes a few minutes for the dye to take hold. I have noticed a decrease in my algae growth and an increase in my water clarity. This is a great value for your money, just make sure you wear gloves as a tiny drop can make a big mess.

Added to a new fountain I bought for my wife. A little goes a long way and adds a nice color to the water! Time will tell how it works for preventing mung from growing in the water!

Does what it says. Very happy with it. I am using this to slow or stop algae growth in my fountain. So far so good.

We bought this because we read that it would help with algae control and it does but just a warning, this is VERY concentrated so be very mindful of that (we had an accidental puncture in the bottle and had blue dye everywhere on our patio for the better part of two months but it did eventually wash out)Aside from that, it’s not a bad price for the bottle size and the fact that a little amount goes a long way. It’s super easy to use with pretty explicit directions although, it would be easier to use if an eye dropper was included.Overall, even though it can be messy and intense if measurements aren’t followed closely, the dye does what it says - helps slow algae growth by creating a barrier and gives your pond a nice blue tint all while keeping your aquatic life safe!

My koi pond has a nice blue color. Plus far less alge. Visitors love the color. Fast delivery great seller.

It does a great job!

I use this every spring in my pond to prevent die off. Before I started using this we were experiencing algae blooms that were killing my koi fish. This has solved the problem and makes the water look nice!

Super easy to use!