HELP!! What happened to my Blue spot???

[Marlin65]

Originally Posted by naesco

How deep in your sandbed?
How did you acclimate the fish?
Why did you use safeguard?
What other fish are in your tank?
The fact that you lost two indicates a problem with the above or with your water?
Is it a newly cycled tank?

It's a QT tank 1-5" sand, and is cycled.
I know how to acclimate my fish
Used safeguard because it is a all around fix and it's not a cheap fish.
No other fish in the tank.
I think maybe poison considering I lost two in the same way. I don't see anything wrong with the fish now, and he was eating well for 10 days.
My clown was in the same tank for 3 weeks and he is just fine.