more bad news im afraid, he didnt get one but TWO, a tail spot blenny and a firefish as well as 6 astreas
if i monitor the tank everyday and test the tank everyday will they pull through?? they're very pretty and i dont want them to die. next monday ill start a seperate build thread on the marine tank.
I will admit I'm pretty confused reading through this thread regarding the tank's size (is this a 20g?) and whether it is overstocked, being stocked too early, etc...BUT, with any combination of those, I agree test daily if worried and keep on top of water changes if anything looks like it's heading south. I'm sure others who have been following more closely will have more detailed advice for the situation.
Anyway, I mainly wanted to comment on the Astreas, since those frankly seem a more iffy choice to me than a fish in a tank with recent ammonia issues (whether a new or established tank). Keep a close eye on them and their food supply while things are settling out, since the last thing you want is one of them crawling off into a hole somewhere to make the water stats worse by dieing from environmental reasons or starvation.