Help! Dyring Fish

[ceri]

Any Help is much apreciated-I have just introduced 3 new sharks to my tank (tank includes angels, tetras and clown loach). One has dies and all fish have become listless with small white spots-slightly fluffy. I assumed it was fungus so have treated the tank with a fungal treatment but they all look dreadful. The tank is 4 foot 140L. Also we have been away so it was not cleaned for two weeks but cleaned today. Could I have diagnosed wrongly?

 

[DarkEntity]

What are tank dimensions, water stats, exact occupants and number of said occupants.

Fungas is fluffy like cotton wool.
Ich(White Spot) looks like grains of salt.

 

[WILDER]

What type of shark are they, the tank is to small if there bala's and also your tank is to small for clown loaches.
Also water stats in ammonia,nitrite,nitrate,and ph.
How big are the spots.

 

[ceri]

What type of shark are they, the tank is to small if there bala's and also your tank is to small for clown loaches.
Also water stats in ammonia,nitrite,nitrate,and ph.
How big are the spots.

Thanks alot for the advice, I am pretty sure from some of these comments plus some more research that it is whitespot instead (poor things). Our tank is the biggest I have ever seen (its HUGE), is it really too small for our little clown loach? I was told i could have up to 25 5cm fish in these dimensions?
Thanks again it is really helpful to talk to an expert.

 

[TerraDreamer]

What type of shark are they, the tank is to small if there bala's and also your tank is to small for clown loaches.
Also water stats in ammonia,nitrite,nitrate,and ph.
How big are the spots.

Thanks alot for the advice, I am pretty sure from some of these comments plus some more research that it is whitespot instead (poor things). Our tank is the biggest I have ever seen (its HUGE), is it really too small for our little clown loach? I was told i could have up to 25 5cm fish in these dimensions?
Thanks again it is really helpful to talk to an expert.

Most sources suggest a minimum of 75 U.S. gallons (280+ litres) for a clown loach. A clown loach will grow to 16" (40+cm) in the wild, 8" to 12" in a well maintained tank. They are very sensitive to water conditions.

EDIT: http/www.loaches.com/species-index/clown...ia-macracanthus