Cycling My Tank

[mickywelsh]

ok guys, gonna get myself a test kit and do a fish free cycle..

so ill get some pure ammonia and add how much, to a 60litre tank??? how do you work it out?

 

[OldMan47]

You work it out very simply. You have about 50 litres of water and want 5 parts in each million to be ammonia. Your 50 litres is 50 x 1000 ml. With 50,000 ml and 10% ammonia, which is close to a typical value you need 10 ml of the 10% stuff for every 1 ml of pure ammonia needed. If you add 10 ml of the solution you have 1 part in 50,000. There are 20 of those 50,000s in one million, so that would give you 20 parts per million. That is 4 times what you want so you only add about 2.5 ml of the 10% solution. This is the way I do it in my head but with a paper and pencil I write out the equations, balance them and run them through a calculator. The answer comes out the same but it doesn't take as many small steps to get there.

 

[oswoldy]

I just read your mind and said it before you did...lol.

-FHM

Thats truely amazing!

"I have a very particular set of skills!" lol

That is a quote form that new movie Taken that was just in theaters here in the US.

-FHM

You work it out very simply. You have about 50 litres of water and want 5 parts in each million to be ammonia. Your 50 litres is 50 x 1000 ml. With 50,000 ml and 10% ammonia, which is close to a typical value you need 10 ml of the 10% stuff for every 1 ml of pure ammonia needed. If you add 10 ml of the solution you have 1 part in 50,000. There are 20 of those 50,000s in one million, so that would give you 20 parts per million. That is 4 times what you want so you only add about 2.5 ml of the 10% solution. This is the way I do it in my head but with a paper and pencil I write out the equations, balance them and run them through a calculator. The answer comes out the same but it doesn't take as many small steps to get there.

I have seen that film its very good, was shown here some months ago though!

OR you could just use the calculator at the bottom of this page: http/www.fishforums.net/aquarium-calculator.htm

Mike