pistol shrimp

I posted a thread earlier but have yet to get a response. I have a successful 5 gallon dwarf seahorse tank and a reef tank both running for a year on May 17. I love my fish and have a passion for animals but when I woke up from my nap today before work, disaster struck, if ya'll could kindly...

I woke up from an hour nap (3:00 pm) and my black clownfish, female clownfish, and my court jester ( my 3 favorites) were all stunned, trying to swim around, for approximately 20 minutes before perishing All the fish that were ORIGINALLY a part of this tank, through all my noob mistakes, have...