have added a fish recently. could not set up q tank.
a thought:
--the tank is well airated. could it be air bubbles??
--the spots seem to accumalate then drop off so the position of them has been changing throught the day. i fed orange slice this morning. could there be particles in the water that are sticking??
Table salt will work just fine. Ive used this method before. Its all just NACL. If you are concerned about the iodine in regualr table salt, you can purchase the iniodized form.
Hopefully DD will respond soon. Appears as if you have caught the ich at a very early stage. Starting treatment immediately is key to a speedy recovery..