Yup, keep it up - all the little critters that just fell off your fish are now going to lay in the tank and multiply for a while. Once they've done that, they will head out into the water to seek out a new host - your fish! What you want to do is get as many out as you can (vacuuming the gravel really helps here) before they have a chance to become free-swimming, and also continue with the salt/heat to get any little nasties that are swimming around in the water.