Green Water Tracing & Leak Detection Flourescent Dye - 1 Gallon

product was as described & delivered on time

Worked well to find small pond leak. The warning label says that it is dangerous on your skin, so maybe a little toxic to humans. A little does go a long way. I used about a cup and could have used half that amount.

Have only run a few sample tests, but it definitely turns the water green and can be seen pretty well with a UV light. I only used a few drops in a gallon of water, and that worked pretty well. Want to run a few more tests before trying to figure out leakages in a water feature and fish pond. So far, so good.

Worked well. Dye takes several days to fade away. Our sump pump goes to our pond, so pond was neon green for a few days or a corner of it. Only takes a little bit to use, not entire gallon.

I used this product to locate a leak in a sewer line, I only had to use very little and it worked great.

Perfect for St. Pattys day pool party. We have an indoor poor and it worked perfectly and looked great. It naturally faded after about 6 hours and was gone by next day. Highly recommend.

This stuff is great pour a bit into the washing machine to find out where it was leaking and sure it enough it helped me find it

i put a cup in a 7ft by 7ft hot tub and it was green and easy to detect leak without uv light

Not sure if I was unlucky with my batch, but my UV light and black light both failed to properly light up the liquid diluted in water (at a ratio that was more concentrated than suggested). While the yellow colour was very bright and fluorescent in colour when in the tub, the inability to light up under UV light meant that it was all but invisible on concrete (colour would not show after momentarily flowing over a concrete slab I tested on). Product works fine if you just want the colour, but would NOT RECOMMEND if you want the fluorescent properties. The cap was also cracked on arrival (but thankfully there was an inner seal. It just means I can not fully tighten and close the cap now and must keep it upright.

Lights up very well under UV light. Used for a Halloween decoration and it worked great.