fishless cycling math question

[twincessna340a]

I have the 10% Ammonium Hydroxide cleaning soln. that I've been using for my fishless cycling in my 40 and 75. I was wondering what the calculations would be if I wanted a given ppm in a tank? [I want 'x' mg/L in a 'y' L tank so I should add 'z' mL of 10% NH3(aq)]

Or if someone could ballpark drops/gal that would be fine.

 

[jsoong]

10% ammonia = 10 g/100ml or 100g/liter or 100 mg/ml

1 ppm = 1 mg/liter

40 US Gal = 150 liters

Therefore 1 ppm in 40 gal = 150 mg of ammonia needed.

<Ammonia needed in mg = Tank size in liters x ppm>

150 mg of ammonia is 1.5 ml of 10% ammonia.

<Ammonia needed in ml = Ammonia in mg / Ammonia concentration in mg/ml>



** To put everything together:
NH3 in ml = Tank size in l x ppm / NH3 concentration in mg/ml


some useful conversions from ml:
1 Teaspoon is 5 ml
Many medical droppers (NOR ALL) are 10 drops per ml

 

[cabezon]

I'd be more worried what the other 90% in that bottle is.

 

[twincessna340a]

water

 

[Aquarium1]

haha +1 jsoong.

 

[mattrox]

I'd be more worried what the other 90% in that bottle is.

Perfumes or detergents will be on the ingredients list.

Otherwise it is just water.