spinjector said:Does sodium hydroxymethanesulfonate work only for chloramines? Or chlorine, too? Or would you have to use it 50/50 with Sodium Thiosulfate to make an "all purpose dechlorinator"...?
It works for both. Like Seachems Prime or Kordons Amquel.
The only difference between sodium hydroxymethanesulfonate and sodium thiosulfate is that sodium hydroxymethanesulfonate will also bind to the ammonia that is present in chloramines (chlorine and ammonia) if you use sodium thiosulfate when you have chloramines. The chlorine will be neutralized but the ammonia will be released.
If you have chloramines and use sodium thiosulfate you will also have to use a second product like ammo lock to completely remove them.
Why buy two products?