I just had a Coral Beauty and a Percula Clown in quarantine together. I had LR in it and checked the water daily. Well, the Coral Beauty would hide down in the rock and only dart out for feeding. One night, I got a good look at him and saw he had a heavy dose of Ich. (It looked just like FW Ich.) The next morning, he was dead, and the clown (who had looked fine before) had the spots. So, I dropped the salinity over a couple of days to 1.010 and raised the temp to 80. He got better and the water tested great. He started eating really well and after close inspection, he looked clear of ich and brightly colored. The next day, he was very pale (almost blotchy) and looked like he had powder on him. (I suspect Velvet). He was swimming poorly and gasping. I tried a FW and Methylene Blue dip. He got to the point of laying in the sand with his gills red and puffed out and he was sort of getting stiff so I euthinized him. (Poor little guy, I didn't like to see him suffer
)
After all that, my question is this: Seemingly two diseases in a tank with good water parameters. (Ammonia-0 Nitrite-0 Nitrate-10 Salinity-1.024 normally) within the period of about 3 weeks. Should I strip the tank (I don't mind doing so, it's only a 30 gal.) and bleach everything in it? Then how long before I can start it up again?
Any advice would be very helpful. I don't mind doing whatever it takes.

After all that, my question is this: Seemingly two diseases in a tank with good water parameters. (Ammonia-0 Nitrite-0 Nitrate-10 Salinity-1.024 normally) within the period of about 3 weeks. Should I strip the tank (I don't mind doing so, it's only a 30 gal.) and bleach everything in it? Then how long before I can start it up again?
Any advice would be very helpful. I don't mind doing whatever it takes.