Green Gobbler Red Water Tracing & Leak Detection Flourescent Dye - 1 Gallon

I give it five stars because it did what I needed it too. We had a stubborn septic problem that left the professionals perplexed. We needed to do several dye tests over several weeks from different locations to track the leak down. To ensure we were not getting old dye from a previous test, we alternated between this red dye and the fluorescent green of the same brand. The green dye was MUCH brighter and more potent. Even miniscule amounts of it glowed like crazy under black light. The red dye worked too, but not as good. So, if you want the best one, start with green. Both colors are mind blowing potent though. They'll make a couple thousand gallons of water or septic waste extremely colored. Also, search "pee dar"on amazon they make a UV flashlight that will work extremely well with the green

This dye saved me so much time and money when trying to diagnose a leak with my AC drain line. It quickly showed me the source of the leak while making the repair quick and efficient while showing me little damage was done during the leak saving me hours of inspections. I may use it in the future in the Florida heat to make sure drain lines are cleared after vacuum and there are no other obstructions.

Not sure what the other reviews are talking about, this product is easy to view in daylight and looks pretty cool. Works great, will update later on the removal process. My pool is about 10k gallons and I used two red solo cups worth of product instead of the entire gallon to track water flow and check for leaks.

Used it to spray Roundup on my field - can not see any color. Total waste of money.

worked as described. Did not show up well in grass

I wasn't sure how much I would need...Definitely not this size. A 5ml syringe was used to find 4 holes in pool liner on 18ft round pool. Only needed 2ml. Worked great to find holes & easy to see it sucked up or not. I got red. Only need small acts to put where there may be a hole, so doesn't change water color or stain pool.

I purchased the Green Gobbler Red Water Tracing and Leak Detection Dye hoping it would help pinpoint a slow leak in my pool liner. While it certainly delivers on color, it completely fails at doing what the product claims. The dye mixed easily in water and created a strong, bright red tint that was easy to see, but when I tried to use it for leak detection it simply spread everywhere instead of pulling toward the suspected hole. Following the directions carefully, I turned off the pool pump, made sure the water was still, and slowly released a small amount near the suspected leak. Instead of drifting toward the hole as other detection dyes do, this one just dispersed evenly in the water and colored everything pink. After several tries in different spots the result was the same each time. It made my pool look like a strawberry smoothie but provided zero indication of where the leak was located. For comparison, I have used smaller bottled leak detection dyes from pool supply stores before, and those clearly pulled toward the leak area when applied correctly. This gallon product is more about tinting large bodies of water for visibility tests, not pinpointing leaks. The label mentions tracing and detection but in reality it behaves more like a coloring agent than a diagnostic tool. On the positive side, the pigment is strong and easy to clean out with a water change or filter cycle, and it does not seem to stain surfaces. However, for anyone expecting to actually find a liner leak, this is not the right product. It’s fine if you need to color water for demonstration or plumbing tests, or for rushing water issues, but completely ineffective for pool leak detection.

This dye is fluorescent so it works best at night with a black light flashlight as it glows in the dark. Not harmful to pump or circulation. It soon dissipates after time.