Hey everyone,thank you all for your help and concerns.
Yes this is my first marine tank,but its not my only marine tank,my affected tank is 4' x 2' x2' which is 450 litre,i also have a 120 litre sump below which is crawling and healthy,I did mix my own saltwater from scratch (tap) but i used every precaution in doing so! I cycled my tank for 6wks before starting to stock. There is 1kg of live rock to every 20 litres of water.i tested the water only yesterday and all parameters are positive including ammonia,nitrate,nitrite,ph,phosphate,hardnes,calci um,alkalinity and iron (chelated&non) the water is perfectly fine!
The puffers symptoms were spotty and generally shy,not much movement,the lfs
assistant was adamant that there was nothing wrong but a little stress! Im kinda feeling stupid and violated by the whole thing cos everything was perfect before then!!
My current fishes symptoms are loss of colour tatted edged fins,milky eye/s lethargic,swimming on side,possible white spots more on some than others!
Ive kind of accepted now that the ill fish cannot be saved and its a matter of time they are too far gone.its all happened really fast and its been a horrible experiance for me and my partner to watch!
Once my tank is empty,if left cycling with the live rock inside for a couple of month,will this infection whatever it is,die off?