Here's the first bit of info I can give you!
do not rely on the seachem ammonia alert thingies. lol

I figured it would be a fun visual to follow the progress but I know I have over 2ppm of ammonia in the tank (Salifert confirmed plus the dosage of ammonium chloride I put in was theoretically enough to get it in that 3-4ppm range) and my ammonia alert stick on is still sitting on green/0.2ppm alert. Sorry little fishies if somebody relies on that! :o

Here's the ammonum chloride instructions:
https://www.fritzpet.com/ammonium-chloride/

Very important: wait until both ammonium AND nitrite are near zero before adding more ammonium.