Fish death problem

Question
I ahvbe had quite a lot of deaths I Just wondered
I use aqaurium salt in my freshwater tropical tank
which is 50 gallon tank. I use the stuff after a fish has died in the tank as It says it helps the immune system of the fish.
Though in the last 3 days unknow to me my daughter has been putting the salt in  3 times a day.
I just wondered if this may have made some fish unhealthy and die.

Since this have taken out a quarter of the water in the process moved the fish out. I would normally take 10%
Cleaned up the pooh they left and took out any dead snails.
nad re-added new water which has the zyme for destressing
Please advise.
Lastly I have ourt a puch in whihc is supposed to slow down algae grwoing in the tank but the water is a little cloudy is this normal ?

Await your reponse  

Answer
Hi there Mark

You should add the salt (1 tbsp per 5 gallons) just once but re-add the salt after a water change as you would of taken the salt out with the water change.

I can't understand your last question so please ask a follow up ith your question spelt correctly.

Jack