No, until you can test to get actionable info, don’t take any action as it’s harder to undo harm.
Once your test kit arrives, you can then find out if your hardness is too low or too high, if too high, need to dilute to remove stuff, if too low, can supplement with shrimp specific products (Salty Shrimp or Shrimp King Minerals) depending on which is low.
Mrsgrghbbs 
No, until you can test to get actionable info, don’t take any action as it’s harder to undo harm.
Once your test kit arrives, you can then find out if your hardness is too low or too high, if too high, need to dilute to remove stuff, if too low, can supplement with shrimp specific products (Salty Shrimp or Shrimp King Minerals) depending on which is low.