prime

Yes, this is the Prime we all use. And according to the description: A single 100 mL bottle will treat 1000 US gallons of tap water. Depends on which size you get, but it goes a long way. I have a small bottle of it that I've been using for months to dechlor a 40 gal, 10 gal, 75 gal, and 46 gal. Still have plenty left.
 
thanks i think 500ml will last for a while :P
 
And it really smells bad !! Good luck.
 
Prime never goes bad, dechlor ON! Really, my chemist husband says it lasts indefinately & will smell "god awful" unlike its' usual "pretty smell", lol. I buy it by the gallon!
 
seen it sold in lfs 20£ for 3litres (bring your own bottles they have loads)
 
say i got a gallon of prime if i kept it in the freezer or fridge would it keep
 
AquariaCentral.com