32oz Reflective Black Pond Dye, 4X Concentrate Pond Dye Black, Natural Looking and Long Lasting Liquid Lake Colorant, Protects Against Sunlight - Ideal for Fish, Birds, and Wildlife

Looks amazing slowed algae plant growth down good value water clarity looked amazing easy to apply will buy again

I really like the Black dye good mirror effect color, and it seems to block out some light to stop plant and algae growth effectively. My pond has a high inflow of water but the color seems to last a few months.

So I’ve used numerous brands and colors of pond dye over the years, all with great success. This dye for whatever reason just did not work. I poured the dye evenly around the pond and in the inlet to the pond and walked away like I always do and like I have done with this pond for the last five years. I went back the next day to check on it and it looked as though I had never even put the dye in; it literally did nothing. I have no idea why this happened because I dispensed it exactly as I have every dye product I’ve ever used in five years. It is the only dye product in five years that has not beautifully dyed the pond.

This dye is very concentrated and probably settles out after a while, so shake the bottle well prior to use. Its dispersal depends upon the amount of water agitation while applying the dye, otherwise it will sink to the bottom because it's so concentrated. For small ponds, a little goes a long way.

I bought this to give my water garden a black mirror effect so my plants stand out and to help hide the its they are in. I use a 6 ft round stock tank for my water garden since the ground is too rocky to dig. This product provides a rich deep black and lasts a long time. It also cuts down on algae build up. Well worth the cost

I found this dye to be weak ( not as concentrated) compared to other brands I have used in the past.

If you think that it’s as strong as a gallon jug, don’t believe it not even close

Used this to help our ponds’ chronic algae problem. It really made a huge difference and held its color well. Easy to use, don’t get it on your hands.