Ammonium Hydroxide or Ammonium Chloride

[Spyderturbo007]

Hi Everyone. I'm having a 20g Waterbox Cube delivered today and was going to start setting it up over the weekend. I'm going with live sand, Bio-Spira and then planning to manually dose either Ammonium Hydroxide NH4OH(aq) or Ammonium Chloride NH4Cl(s) I can grab from my lab.

Ammonium Hydroxide.
28-30% as NH3.
As and Sb (as As) <= 3000ppb
heavy metals (as Pb) as <=500ppb.

Ammonium Chloride
>=99.5%
Heavy Metals (as Pb) <= 5ppm


Is one preferred over the other? What is the recommended concentration in the tank so I know what I need to dose. Also, what's the recommended conversion time for the bacteria to convert the target concentration?

For example 3ppm Ammonia converted to Nitrate in <12h.

Or should I just dispense with the dosing and chuck in one raw shrimp for a few days.

 

[Alenya]

Ammonium Chloride is what I prefer.
I use a 45g/L solution that I then dose accordingly.

 

[Spyderturbo007]

What's your target concentration? I'm sure I could always steal/borrow a volumetric flask.