Seachem Prime

Prime is the complete and concentrated conditioner for both fresh and salt water. Prime removes chlorine, chlroamine and ammonia. Prime converts ammonia into a safe, non-toxic form that is readily removed by the tank's biofilter. Prime detoxifies nitrite and nitrate, allowing the biofilter to more efficiently remove them. It will also detoxify any heavy metals. Use at start-up and whenever adding or replacing water.

FAQs
Q: I think that my Prime® might be old because it smells like it went bad.
A: Prime® has a very distinct odour that is similar to sulfur which is completely normal.

Q: I noticed some small black specks in the bottom of my bottle of Prime®. Is it still good?
A: The presence of small black specks occasionally occurs and is normal.