Sentry AQ Mardel Clout Tabs, 100ct

This works miracles. I thought my jack Dempsey was toast. I had tried everything and I mean everything. My fish was having issues with his swim bladder, and was floating at the top of the tank for months. This was the only thing that worked. It's now three months later and he is happy and healthy again. I does suck the silicone is a blue color, but it does fade. You don't even notice that the silicone is stained anymore. Just make sure to pull out any decorations, or they will be blue.

It was unclear what was killing my fish, but this took care of it. Seems like the best value out there if you have a large tank to treat. Only downside it that it will turn silicone blue. The blue color of the water fades after a day or two.

Did not work

Thought it would cure flukes from koi but they all died anyways. Did everything based on instructions too. Waste of efforts

Yes, leeches in an aquarium. Ugh. But this is supposed to kill them. According to the fish boards it is one of the only things that kills them.I treated once the first time and still saw another leech (a little one... one inch long) a couple of weeks later. Just re-treated two days in a row and have not seen one yet.By the way... this product has a chemical known the state of California to cause cancer. Don't use it unless you have to. It does also treat ich, but there are way better, safer products for treating ich, like Seachem ParaGuard 250ml.

I woke up one morning and discovered my favorite fish had a bubble on it's tail. After doing a bit of research, her symptoms, and those of her brothers, sounded like parasites. I separated all the fish and used this on them. It helped her brother immediately with just one dose. His surface breathing has stopped, his pop-eye has gone down, and he's no longer flashing. Her on the other hand, she still has the bubble on her tail, but she is no longer surface breathing. These are large fish (over 1.5 lbs each) so I'm happy this worked so fast. While the instructions state that a water change isn't necessary, I would suggest doing a 25% change maybe a day after dosing with this.

this product works. the medication really help with parasites that causes breathing problem. make sure you remove the carbon filter. best result put the infected fish in a separate isolation tank

Instantly killed anchor worms on my guppy population when a bad breeder sent me a contaminated fish. I'd never heard of them before, so I thought the white line on her dorsal fin was just part of her coloration until they spread. It was a nightmare to deal with, nothing worked and the one medication everyone suggested isn't in supply anymore. I found this stuff and took a chance, worked practically instantly! I was so happy not to lose any fish to them, because of this product.