[How exactly do i do this. I have a regal that looks like he has a few white spots on him and something discolored in front of his eye that hes been rubbing on a rock. I want to put him in this 10G tank I have for a week and treat him so the spot will clear up. Am I approaching this right? I am going tomorrow to buy a sponge filter and a heater. I was planning on tanking water out of my already established tank and a little bit of sand. I got some treatment for parasites from DNA. IS there anything else I should know or be aware of?]