Is Parashield reef safe? Can it be dosed in a DT?Every little bit helps, but if this is velvet and fish are already dying it won't make much of a difference at this point.
However, based purely on one anecdotal account Parashield may be able to slow it down: https://www.reef2reef.com/threads/a-discussion-regarding-herbal-remedies.251560/
Perhaps all the oils stick to the fish's skin and that makes it more difficult for the dinospores to attach.
what copper are you going to use? With Cuppramine (seachem test kit) you would want between .3 and .5 - i always shoot for .5 so I have some wiggle room for it to drop a little and still be therapeutic. With Coppersafe or CopperPower (API test kit) you would want between 1.5 to 2ppm

