So being new to saltwater fish keeping i have done a ton of research. Things were going amazingly well. I had a goby, 2 clowns, a mccosker wrasse, 3 pajama cardinals, and a coral beauty and several varieties of coral. Well 2 weeks ago I started a new job and missed a water change due to being away for training. Family was home but didn't do one they only fed them. My first day back I found my wrasse dead. So I pulled him and did some testing nitrates were quite high so I immediately did a water change of 25% and another 25% the next day. Sadly the next day my pajamas and coral were gone and now today my clowns are gone. All I have left is my goby and a cleaner shrimp and some snails. Any ideas where to go from here to recover this tank and start again? Should I drain the water and do a new start of cycling and all?