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)

This pond dye goes along way. One jug will do quite a bit. I used half of one on our small farm pond. It looked beautiful.

Does a great job covering our 1/4 acre pond. I'm sure it's helping to keep the algae at bay during this extreme hot spell.I would purchase again.

used 1/4 the bottle in my 1 acre pond nice color

This works well for our pond. The dye will stain skin and clothing though.

Nice color makes my pond super blue

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.

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!