So what I thought was going to be a new seahorse tank has turned into an emergency hospital tank. I noticed that my 2 tangs started to get spots on them. I thought it was Ich but it now looks to be velvet. I pulled them both out and put them into a 29 gallon bio cube and have started Coppersafe, that I’ve had on hand just in case I ever needed it. I’ve ordered a Hanna Copper test tonight that will be here on Thursday. I was in hurry mode that I didn’t remove the sand or rocks that were in there. Should I maybe remove the sand now or just leave it and test the levels and add accordingly? Thoughts…