[letiger10]

LAST APRIL I BUILD UP A MARINE AQUARIUM. THIS IS THE FIRST TIME I BUILD UP AN AQUARIUM THIS KIND. I HAD HAD FRESH WATER AQUARIUMS BEFORE, SO I DECIDED TO UPGRADE MY HOBBY.
IN MAY I BOUGHT A STARFISH AND I THINK IT HAD A DISSEASE BECAUSE MOST OF THE FISHES STARTED TO DIE:
YELLOW TAIL BLUE DAMSEL
YELLOW TANG
BICOLOR PSEUDOCHROMIS
CORAL BEAUTY ANGELFISH
PURPLE PSEUDOCHROMIS
DOMINO DAMSEL
2 PERCULA CLOWN FISH
FLAGFIN ANGELFISH
HENIOCHUS BUTTERFLY



EVERY COUPLE OF DAYS I WATCHED AS THEY DIED AND BECAUSE OF IGNORANCE I BOUGHT MORE FISH. FINNALLY MY VENDOR TOLD ME TO CHANGE THE WATER AND THE GRAVEL, SO I DID IT.

I WAIT FOR A MONTH THEN AGAIN I STARTED OVER WITH THE BLUE TANG, A CLEANER SHRIMP, AND A FIREFISH THAT SURVIVED TO THE DISSEASE AND A COUPLE OF CLOWNFISH THAT I BOUGHT.

AFTER ANOTHER MONTH THAT WENT BY I DECIDED TO BUY ANOTHER FISH, SO I BOUGHT ANOTHER CORAL BEAUTY. AFTER TWO DAYS THE FIREFISH WAS DEAD.
COULD IT BE THAT THE CORAL ATTACK THE FIREFISH?

MY AQUARIUM IS MADE UP FOR 50 GALLONS.
COULD BE THE CAPACITY OF THE TANK?

I’LL APPRECIATTE YOUR HELP AND ADVICES.

[redvipe2010]

Did you add the fish all at once? Was the tank cycled? What are your water parameters? What are you using for filtration? Your first attempt seems a bit over stocked to me.

[letiger10]

Originally Posted by redvipe2010

Did you add the fish all at once? Was the tank cycled? What are your water parameters? What are you using for filtration? Your first attempt seems a bit over stocked to me.

Thanks for answering my message and sorry I didn't anser before.
No, I didn't add all the fishes at once. But after the star fish died, fishes start to died too then i bough some more one by one (they 're expensive over here in El Salvador). Actually they are ok and I have 1 Blue Tag, 2 Clownfish, 1 Coral Beauty and the Cleaner Shrimp.
I'll try to buy another one next month but i must wait till the vendor bring more to sell. Then i'll know what is he bringing over here.
The tank is cycled and has a canister filter for 50 gallons.
Actually I don't know about the parameter you're asking for. How can I do that?

[Reefland]

Water parameters would include:
Temp
Salinity
pH
Ammonia
Nitrite
Nitrate

For starters...

[letiger10]

Thank You.
I'm Not Sure About All Of These Items But Temp Is 28-32 Celsius Degree And Salinity Is 28 Ppt.
I'll Check The Rest Of Items And I'll Let You Know Later Buddy.

Thanks Again

[Zoanuts]

The temp is very high. If I remember 28 celsius is 82F-90F so your tank seem very hot. Depletes O and stresses your animals out. Your Starfish probably had the similar issues with temp.
So I think your first step is to control the Temp. How are you measuring your temp? Start there and make sure it is correct.
Gotta get the temp before the other paramaters.
I wouldn't add anymore fish, inverts until this is addressed. Keep us informed

[Ninong]

Originally Posted by letiger10

I'm Not Sure About All Of These Items But Temp Is 28-32 Celsius Degree

Anything above 30 C is too high. Is your tank indoors or outdoors?

And Salinity Is 28 Ppt.

This is much too low. Natural seawater salinity averages 35 ppt.