This is the email reply I received this morning from the company...
Hi Paul,
Thank you for contacting us. I cannot specifically say that we have tested this product on discus, but I do know it is safe for aquarium usage as long as you dose accordingly.
You are correct in the dosage. As 10 ml will treat 50 gallons of water, you would need 30 mil for 150 gallons of water, regardless of whether it is a pond or an aquarium. With this product, just make sure there is plenty of aeration and water movement.
Best Regards,
Barbara Linkhttp://www.netanimations.net/angelfish.gif
Consumer Relations Lead
Spectrum Brands|Pet, Home & Garden
So, the instructions say to mix up a solution of the exact dosage for the pond(tank) in a separate bottle of tap water, mix up well, then slowly add the dissolved solution into the tank. If I am using a 15 gallon tank, I will be putting 3mL of this solution into a plastic bottle with tap in it, then adding that into the tank. I hope my math is right, and I hope this works on these pesky flukes! I am supposed to re-dose after 7 days if signs of infection persist.... now I'm wondering if I should be adding in more of the solution when I do my daily w/c's for the first 7 days ?? Probably yes? Here goes nothing........