Math doesn’t seem right.

[sangria517]

I am getting supplies to cycle my 180gallon tank. For a fishless cycle, if I went with Dr Times, 4 drops per gallon x 200 (can’t forget the sump) is 800drops. Figure 2 drops per once that is 40oz of ammonium chloride. However, Dr Timms says a 4oz bottle will do 200 gallons. Am I missing something?

 

[Formulator]

There are about 600 drops in an ounce. So your tank needs about 1.3 ounces.

 

[PharmrJohn]

Not sure if this applies to your situation or as Dr. Tims as a product, but in the wonderful world of pharmacy, a liquid with the viscosity of water is measured as 20 drops=1ml. So a 4 ounce bottle would be 120mls=2400 drops at said viscosity. If the viscosity is greater than water, then the drops per ml lessens (e.g. 10 drops=1ml with a somewhat thicker liquid).

 

[sangria517]

Not sure if this applies to your situation or as Dr. Tims as a product, but in the wonderful world of pharmacy, a liquid with the viscosity of water is measured as 20 drops=1ml. So a 4 ounce bottle would be 120mls=2400 drops at said viscosity. If the viscosity is greater than water, then the drops per ml lessens (e.g. 10 drops=1ml with a somewhat thicker liquid).

Bless you! It’s 20 drops per mL not oz! This is what happens when you try to do math after tequillla and tacos!!!