I have used this product, and it did not work for me. I'm not trying to bad mouth Ecological Laboratories Inc. in any way...just relaying my experience with the product since that was the question asked.
It sounded like the "holy grail" miracle that's why I bought it. But for me it wasn't, and caused me more problems then the Ich I was trying to cure with a Kole Tang in my fully stocked reef tank.
They claim it is "reef safe", but IME with the product it is not TOTALLY "reef safe". After the very first application (you have to dose this for 10 days) all of my Large Mexican Turbo Snails/Orange Turbos would "clamp up" shut their operculum and fall off the glass/rockwork. They would remain this way for several hours. Then some would "wake" back up and come back to life, but some would die.
This is a 10 day treatment according to their instructions. And each day I would dose according to their instructions I would lose more and more of my Turbo Snail population. By the time 10 days was up all of the Turbos in my tank were dead. Ironically it didn't affect any other type of snail in my system just the Turbo snails.
Fish and corals didn't seem bothered by my additions of Herbtana, as well as shrimp, crabs, and other inverts. Just the Turbo Snails had a very bad reaction to it. Also my Clams hated this stuff...clamped up and looked very unhappy. After my 10 day treatment was done, and it didn't cure the Ich in my tank (it actually spread) I decided to stop using the product cause I didn't want my clams to die. They state a longer treatment period may be required if you don't get results within 10 days. I didn't want to risk killing my clams. The clams have bounced back and are doing well since I've stopped treatment.
After my very first dose of this stuff, (and I saw all my Turbos drop like flies off the glass/rockwork) I quickly contacted the microbelift website to let them know what happened. I exchanged several e-mails with Karin Berke (Customer Relations for microbelift), and they were very interested in my findings with the product. I kept her updated every day on my experiences. When I e-mailed her that all my Turbo Snails were dead, and I have more fish infected with Ich then I started out with I never heard from her again.
That's my experience with the product.