reply
 

Just read this thread and my first instinct tells me that your puffer did this. How did it's body look when you noticed this disaster?

33% / week?
 

i'm just wondering, if that might 2 much of a water change??
Isn't it like @ 10-15%, but then again do u have a skimmer??

Ya im with bv)reefer I think 33% is a bit to much.

Me too. Unless there is something obvious with the source water or accidental poisoning with household cleaners, I would really consider the puffer as a possible cause.

puffer
 

i donno about puffers but I know that boxfish are quite poisonous for inhabitants and owners alike when stressed or when they die, so jsut take that into consideration.

Another vote for the puffer as the culprit.

A 1/3 water change is not a huge amount by any means.

Seconded.

33% is not alot when you take into account the water that's displaced by all the LR as well.

fish
 

Check your alkalinity.It happened to me years ago.It was the salt

salt?
 

-as in salt u meen that ur specific gravity waz 2 high? or that the salt
was contaminated??

disaster...
 

I'm sorry to hear about your tank. I had problems with ph 'swing' and ammonia readings in my first tank (29gal nano). They said it couldn't be done but I killed two false percs... testing your tap water with the kits may give you an unexpected answer to your problem. I found out that edmonton water has a fair amount of ammonia reading and somewhat low ph. After mixing water I found that some of the dosing (ph buffer and prime) was not enough. I've had much better success since I started testing my water change water. How much prime is too much? The bottle says 5ml per 50 gal but I use about 7-8ml per 25 gal.