Dr Tims Ammonium Chloride Solution Gallon UK Or US?

Hi,

Bit of a silly question, but I don't seem to be able to find a definitive answer anywhere.

I have a bottom of Dr Tims Ammonium Chloride Solution for my Fishless'ish cycle, the instruction say
"add 4 drops per gallon" I'm just not sure wether thats a US gallon or an Imperial Gallon.

Anyone used this before?

Alternatively, take a litre of water and add enough to get 3ppm by adding some, testing how far you get etc...

 
Maths not my strong point.

Since Dr Tim's is an American company they will be American gallons. And the concentration won't be equivalent to 9.5% ammonia solution so you can't use the guide amount in the sticky.



1 American gallon = 3.785 litres according to the calculator on here. So 4 drops per 3.785 litres.

3.785 litres need 4 drops, therefore 130 litres need 3.875/4 x 130 = 137.38 drops

If 4 drops = 0.2 ml, 137.38 drops = 0.2/4 x 137.38 = 6.869 ml.



You can always add more, don't forget to add the drops you use together so you know how many drops in total you used for the 3 ppm dose.







I like maths  I got grade 1 O level, and wanted to do A level maths but the lessons were held at the same time as biology and biology won out.