unhealthy fish

[Bluebutterfly65]

Last few days my tricolor sharks, clown loach have been died. Ph is ok Ammonia ok. Brown algae on plastic plants. Could that be the problem?

 

[rcsguy]

Nitrite levels? When you say ammonia is ok, does that mean 0?


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[gilpi]

Brown algae does not harm anything.
We need more information... maintenance, feeding, filtering etc.
I almost forgot "the" question, is the tank/filter cycled?