by all means, Mr. Salty has made a great point. Patience is of utmost importance!!!
You have got to check the levels, allow the tank to "cycle" and begin to stabilize.. beyond that, I normally wait a minimum of 2 wks. between additions, and then it would be a "small" addition. Give us all the reading you can, such as ammonia, nitrite, nitrate, ph, salinity...all of these will help "gauge" the status of your system...
hope this helps....Just remember, slower is better.