http://forum.aqua-fish.net/ A forum devoted to aquarium fish, plants, techniques and fish keeping as a whole. en http://forum.aqua-fish.net/?topic=seachem-prime#1 have just started using this product and can see the benefits already.Was using stress coat but the bottle was emptying too quick as I do a 15 gallon a day water change-7 days per week. Prime is dosed at 5ml per 50 gallons of water so the bottle I have purchased will last at least a year.Improves fish appetite as well as doing the slime coat. mickey 2008-06-09