Miracle Mud..to try or not got go there?

[BlueAbyss]

I think that's what's referred to as a 'massive water change'? That's probably not necessary... but those fish aren't going to do well at all in that tank. You'll need to find a new home for them very soon.

I have a 10 gallon, I do a 25% water change a week. I'm thinking of doing this every 5 days though, since the water has started to come out of the tank slightly yellow (increased feeding and such from all the new livestock).

My tank contains a Purple Firefish, and a Hector's Goby, an emerald and hermit crab, and various corals. The firefish seems perfectly suitable for this size of tank, and the goby was recommended for this size tank everywhere I looked, BUT when I got it home I was informed it (the goby) will likely starve in anything under a 30 gallon... time will tell, he seems fat enough for the moment. Definitely do your homework before buying anything, though (I learned with this goby) even that won't necessarily save you from a mistake. I love the goby though, very cool fish (hope he makes it for the long term).