Big Severum Has White Spot

See if the spots are still there on day 6, and if they are I would wait till day 9, do a big water change then start again. If they drop off before day 6, make sure you add the day 6 dose.


Just to make sure, does it look as though it's been sprinkled with salt?
The whitespot parasite has three stages to its life cycle. The first stage is the spots on the fish where it eats the fish's tissues encapsulated in a covering - and the medication can't get at it in this stage. The second stage is where the spot falls off the fish, still encapsulated, and divides to make lots more parasites. Meds can't get at in this stage either. The final stage is where the capsule opens and the 'baby' parasites swim off looking for a fish to infect - and the med can now kill it. There can be some of all three stages in the tank at once and the reason for the dosing even after the spots have gone is to get the very last one when it gets to stage three.


If you prefer to change medication if it doesn't clear up, run some new carbon in the filter for 24 hours before changing. I've always found King British Original Formula WS3 works for me.

king British ws3 and put your temp up to 82 should go within 24 hours