Nosphaer
Fish Fanatic
For people in the US, ACE hardware sells unquestionably suiting ammonnia. They call it "Janitorial Strength Ammonia", and it is simply Ammonia and water in a 10% concentration.
It's true that you can only get it in gallon sizes, and that you'll wind up paying about 6 USD, but it doesn't have an iffy ingredient list.
The brand "Great Value" (Wal-mart's most prevalent, and sometimes only, brand of ammonia) contains surfactants, which we know is a bit iffy for the process...
I hope this helps!
(EDIT) Goodness... It has already been mentioned a few times. I need to read before I post ><
It's true that you can only get it in gallon sizes, and that you'll wind up paying about 6 USD, but it doesn't have an iffy ingredient list.
The brand "Great Value" (Wal-mart's most prevalent, and sometimes only, brand of ammonia) contains surfactants, which we know is a bit iffy for the process...
I hope this helps!
(EDIT) Goodness... It has already been mentioned a few times. I need to read before I post ><