Ppm Calculation

sjolliff · Jun 30, 2009

Hi
ive got 125 litres/33 us galons tank
how much ammonia do i need to make like 5ppm to test in12 hours for my fishless cycle?
cheers steve

zesty · Jun 30, 2009

sjolliff said:
Hi
ive got 125 litres/33 us galons tank
how much ammonia do i need to make like 5ppm to test in12 hours for my fishless cycle?
cheers steve

Hi
You need to know the strength of your ammonia then look at the bottom of this link http

/www.fishforums.net/aquarium-calculator.htm for the ammonia ppm calculator.

sjolliff · Jun 30, 2009

zesty said:
sjolliff said:

Hi
ive got 125 litres/33 us galons tank
how much ammonia do i need to make like 5ppm to test in12 hours for my fishless cycle?
cheers steve

Click to expand...

Hi
You need to know the strength of your ammonia then look at the bottom of this link [URL="http/www.fishforums.net/aquarium-calculator.htm"]http/www.fishforums.net/aquarium-calculator.htm[/URL] for the ammonia ppm calculator.

9.5% w/w it says
calculator says 6.57ml

zesty · Jun 30, 2009

Thats how I worked out my ppm, I needed 18.5ml so it was a bit easier to measure out.

As an alternative you can get different size medicine droppers, then you can use say a 5ltr bucket of water and see how many droplets you need to get to 5ppm. Using this knowledge you can then calculate how many droplets you would need for your tank size.

cowboy507 · Jun 30, 2009

if you have the api testing kits you could also use the tubes that it comes with. The line on the tube is 5 mL. the calculator is just a rough estimate you will have to experiment a little to figure it out. add the ammonia and test an hour later to see if you have 5ppm ammonia yet, if not add a little more. if it is a little over 5ppm this is fine, but if it is really high then do a small water change.

mayurkirti · Jun 30, 2009

nice going sjolliff!

Schmill · Jul 1, 2009

For adding ammonia I always find going to the local chemists and asking for a childrens medicine syringe makes for easy measuring.
I have a 1ml, a 5ml and a 10ml and they are all marked off in useful sub-increments too

Geoff1991 · Jul 1, 2009

Schmill said:
For adding ammonia I always find going to the local chemists and asking for a childrens medicine syringe makes for easy measuring.
I have a 1ml, a 5ml and a 10ml and they are all marked off in useful sub-increments too

I use a 60ml so i can fill all the test tubes in on go... :lol:

And i use a 5ml for plant ferts and a 2.5ml for dosing ammonia

sjolliff · Jul 1, 2009

Geoff1991 said:
Schmill said:

For adding ammonia I always find going to the local chemists and asking for a childrens medicine syringe makes for easy measuring.
I have a 1ml, a 5ml and a 10ml and they are all marked off in useful sub-increments too

Click to expand...

I use a 60ml so i can fill all the test tubes in on go...

And i use a 5ml for plant ferts and a 2.5ml for dosing ammonia

just dosed the tank with the amount shown by the calculator and its way over, calculator said 6,57ml for my 33 us gallon tank, just tested after an hour and is showing close to 8.0PPM?!?!
UPDATE the syringe i used is about 7ml when full, i thought it held 5ml when full Ooops, so i added like 8ml

OldMan47 · Jul 1, 2009

It may be time for a 25% water change and then keep the right number in mind for next time. At an 8 ppm of ammonia, the wrong bacteria will dominate the bacterial colony. At 5 or 6 ppm, things will be fine for a fishless cycle.

waterdrop · Jul 4, 2009

Yes, agree with this advice. When measuring the ammonia add that was accomplished you want your "guesstimate" to be closer to the "4ppm" green color look than the "8ppm" green color look if you are using the API liquid test.

~~waterdrop~~