4X Blue Pond Dye - Transforms Murky Water to Natural Blue - Super Concentrated Lake & Pond Dye - Liquid Shade Treats Up to 1 Acre - Safe for Fish & Wildlife (32 oz)

My husband ordered this after reading through many product descriptions, but failed to realize exactly HOW concentrated this dye actually is. It does what it says it will, -killing algae and coloring the water. He put in about a teaspoon, which will apparently treat a body of water about 15x's the size of ours. Even though it's quite dark right now, we're looking forward to seeing the level of blue after a winter of Washington rain. Great value for the money, you definitely don't need to use much!

This made a fast pleasant color change to our pond. It works as promised. I have a 2 acre pond and the one gallon was not enough to change water to deap blue. But in a slightly smaller lake the water should change very blue. My pound is no longer muddy and murky, it is a nice aqua-turquoise color. And water clairity is two feet deaper than before.

We put this in our 3 acre pond and it turned a really pretty blue. Use as it says and it's 1 bottle per acre. I bought 3.

I use dye in a large pond. This works as well as anything I have tried. The one gallon 4X goes a long way.

You don't need much... wow

I used the product on my small pond, I didn't see a big difference, my pond just looked darker in color. It looked like a midnight black color. When you use the product use gloves. I had a little hard time pouring it out as it dripped over the spout as I was trying to not get it on my clothes. I used a rake to try to spread it out over the water, which was time consuming, and I eventually let the wind shift it around the pond. If you get it on your hands, it rinses out with regular soap and water and leaves a light tint. My hand was light blue for about half a day.

This product usually works well, but doesn't last a long time in my lake. However, this time it turned neon green. Not sure if this is a chemical reaction with algae bloom or what.

This is by far the best pond dye we have used. It lasts for months longer than the dye we used to purchase from TSC.