Just looking for everyone’s opinion and feedback on what they think could have happened
So I started a quarantine tank. 20 gallon long with a coralife 40gallon filter. I have the fter pad and some anommia remover pad in there. PVC and a 100w heater. I have not medicated any of the fish. I am going to talk about. They have all just been an observation. I added a yellow corris wrasse on April 4 and he is still in there and has been doing fine ever since I would say around two weeks later I added a royal grandma which also had done fine and both of them were doing well I would say around 2 to 3 weeks later I added a neon wrasse which was a spontaneous buy needless to say he ate the next day and seemed fine however, two days later I found him dead.  I didn’t really think too much of it and just let it go on hoping he just died from stress or something. My plan was to leave the other two fish in for another four weeks to give them time to show any signs of symptoms from anything and if all went well, I would add them to my display tank fast. I would say three almost 4 weeks as my plan was to add them this Friday. I just found my royal gramma dead this morning…. yesterday he was in the corner hiding but I didn’t think much of it because it’s his corner he hides in and he’s usually skittish. He was also eating the day before and that morning.
 I have been doing weekly 10% water changes on this system. It is a 20 gallon tank. I have tested my pneumonia quite frequently and it has always been at zero and all of my other parameters within check. The only thing that has changed recently is the temperature. My tanks are in a garage and it has been really hot this week. Normally my tanks sit around 78° and will sometimes go up to 80°. That is my 75 gallon tank however 20 gallon tank in my even smaller 12 gallon frag tank has got up to 84° throughout the day, I know this is because of their smaller size in the frag tank. I am already upgrading, but I’m not sure if that could be cause for death or not, but it is the only thing that has really changed. Now I’m issue is also moving the yellow wrasse or if I’m going to have to wait even longer i’m not sure if the quarantine tank is the reason they could be getting stressed out and dying or whatever just looking for anyone with a lot more knowledge feedback on what they think could’ve happened no signs of any diseases no white spots anything like that I’ll get better pictures
So I started a quarantine tank. 20 gallon long with a coralife 40gallon filter. I have the fter pad and some anommia remover pad in there. PVC and a 100w heater. I have not medicated any of the fish. I am going to talk about. They have all just been an observation. I added a yellow corris wrasse on April 4 and he is still in there and has been doing fine ever since I would say around two weeks later I added a royal grandma which also had done fine and both of them were doing well I would say around 2 to 3 weeks later I added a neon wrasse which was a spontaneous buy needless to say he ate the next day and seemed fine however, two days later I found him dead.  I didn’t really think too much of it and just let it go on hoping he just died from stress or something. My plan was to leave the other two fish in for another four weeks to give them time to show any signs of symptoms from anything and if all went well, I would add them to my display tank fast. I would say three almost 4 weeks as my plan was to add them this Friday. I just found my royal gramma dead this morning…. yesterday he was in the corner hiding but I didn’t think much of it because it’s his corner he hides in and he’s usually skittish. He was also eating the day before and that morning.
 I have been doing weekly 10% water changes on this system. It is a 20 gallon tank. I have tested my pneumonia quite frequently and it has always been at zero and all of my other parameters within check. The only thing that has changed recently is the temperature. My tanks are in a garage and it has been really hot this week. Normally my tanks sit around 78° and will sometimes go up to 80°. That is my 75 gallon tank however 20 gallon tank in my even smaller 12 gallon frag tank has got up to 84° throughout the day, I know this is because of their smaller size in the frag tank. I am already upgrading, but I’m not sure if that could be cause for death or not, but it is the only thing that has really changed. Now I’m issue is also moving the yellow wrasse or if I’m going to have to wait even longer i’m not sure if the quarantine tank is the reason they could be getting stressed out and dying or whatever just looking for anyone with a lot more knowledge feedback on what they think could’ve happened no signs of any diseases no white spots anything like that I’ll get better pictures