tank turned brown over night and fish dieing HELP

[pepsi]

:help: :help: :help: :help: :help:
Tank was fine when I turned off the lights next morn. turned lights on and fish were going nuts and the tank was so cloudy you can't see thought it. water tested good I never had this happen before this tank has been up for a year it does have a sand bottom which I had never had before this tank.
I changed out half the water and cleaned out the sump and everything else just got home from work and water is still the same and know most of my fish are dead help save the rest please.
thanks
mark

 

[coloradodeb]

Ok first off we need all of your water perameters.....that will be a lot of help......any plant tlife in there at all?? Did you have a power outage, and the power came back on and caused a massive amount of "crud" out of your filters??? More information please.....

 

[pepsi]

Hi
No plants or live rock pet store said a alge bloom ??

 

[beth]

Have you cleaned any fake rocks in there? What exactly is in your tank? Please post your water readings, including pH.
Did something die in tank and go unnoticed?

 

[pepsi]

:joy:
thank you all for your help it cleared up and things seem to be fine now. but I did lost some of my friends
thanks
mark

 

[shrimp134]

What did you all loose...how is the tank doing..keep updating us...thanks!

 

[pepsi]

i LOST A 10" PORK. PUFFER, GROUPER, A LARGE DOMINO(BAD SPELLER) AND A LARGE SILVER FISH THAT THE PET STORE DID NOT KNOW WHAT IT WAS.
aLL SEEMS WELL IN TANK RIGHT KNOW BUT I AM IN HOLDING PATTERN BEFORE RESTOCK. i HAVE HAD TANKS FOR OVER 20 YEARS AND THIS IS MY FIRST LARGE SCALE LOST SO I GUESS I CAN COUNT MYSELF LUCKY.
AGAIN THANKS FOR THE ADVICE.
THJANKS
MARK