Its a 55 Gallon Tank, nothing in it, but a 200 watt heater, 500 GPH
powerhead, water. Thats it, I just set it up the other day (sunday) and wanted to set it up to be able to put live things in it around Juneish.
I've done this before, with about 7 other tanks and havent had this problem. I seriously see no reason to mix it in a bucket if your just setting your tank up, now if its established thats a different story. Just curious about the residue/film, (if I got a bad batch of instant ocean, etc.)