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yes roughly correct (4.57 gram to get 15ppm of NO3 per dose), don't worry no need to be accurate.
Hi all,
I'm considering to dry-dose my tank with CaNO3 to provide the nitrates for my 160L planted tank.
Based on this nutrient calculator,
To reach your target of 15 ppm Ca you will need to add 14.141 g Ca(NO3)2.4H2O to your 160.0 L aquarium to yield
Ca 15.00 ppm
NO3 46.41 ppm
dGH 2.09 degree
Is it correct for me to dry dose a third of 14.141g in order to obtain approximately a target of 15 ppm NO3?
yes roughly correct (4.57 gram to get 15ppm of NO3 per dose), don't worry no need to be accurate.
Thanks, Shadow!Originally Posted by Shadow
Sorry to ride this thread, as i am also considering to dose calcium nitrate in my tank, i would like to know what will happen if the plant doesn't use the calcium as fast as you dose? will it have adverse effect on the fishes, plants and water?
GH will rise slowly over time. using RO water can counteract this, or if using tap water, which already has some Ca, it's recommended that you do a large water change once in awhile (50%).
If you are using EI dosing method, it is recommended that you do weekly water change.
Hi,
Using the same calculator for thread #1, can someone help decipher how much exactly do i add to my 500ml solutions? The readings i get is a 4481.064g. Can someone confirm if the "g" stands for grams? If it is, then i will be adding 4.4kg of Ca(NO3)2.4H2O to a 500ml solutions?
Results from the calculator;
To reach your target of 15 ppm Ca you will need to add 4481.064 g Ca(NO3)2.4H2O to your 500.0 mL dosing container. Add 5.0 mL of that mix to your 507.0 L aquarium to yield
Element ppm/degree Ca 15.00 NO3 46.41 dGH 2.09
That about right, but I do not thing you can dilute 4481 gram of Ca(NO3)2.4H20 in 500ml of water
yes g means gram,
I assume you are targetting no3 rather than ca from Ca(NO3)2.4H2O ?
In that case it's too overwhelm for NO3 46.41 per dose.
That's what i thought so. How am I able to dissolve so much in 500ml? Or there is a mistake using the calculator?
Yes, i am looking more on the NO3 portion. Even if i half the 4481 grams, it is still 2240.5 grams. That is still way too much. Was wondering how others dose NO3 from Ca(NO3)2.4H2O ?
select what's the result of my dose option, and you customize the grams value till the NO3 target that you aim for.
Now i get it, I did not choose properly the options in the first place. Thank you.
I'm using my own calculator and some up with same result, so should be correct
you do not need to dilute it, you can dose directly to your tank. for your tank size, you need roughly 30 gram to get 30ppm of nitrate.
or you just increase the amount of stock solution to dose. For example you use 500gram dilute it with 500ml, then every 1 ml give 1 ppm of nitrate to your 507 liters tank. If you want to target 10 ppm, just dose 10 ml.
Last edited by Shadow; 21st Jun 2013 at 17:50.
Hi Shadow,I'm using my own calculator and some up with same result, so should be correct
you do not need to dilute it, you can dose directly to your tank. for your tank size, you need roughly 30 gram to get 30ppm of nitrate.
or you just increase the amount of stock solution to dose. For example you use 500gram dilute it with 500ml, then every 1 ml give 1 ppm of nitrate to your 507 liters tank. If you want to target 10 ppm, just dose 10 ml.
I wish to do what you suggest but i believe i will not be able to dilute that much in just 500ml to achieve 1ml per 1ppm of nitrate. Did you dose dry or dilute into a solution? Can share with me how you do it?
The number was just for example, you can adjust to your need.
I'm diluting 250 gram with 1000 ml, and I'm dosing 10ml 3 times a week on my 3ft. That roughly 10 ppm each dose.
Shadow,
I just calculated using the calculator in thread #1 with 250gram with 1000ml, the calculator has a message " The solubility of Ca(NO3)2.4H2O at room temperature is 121 mg/mL. You should adjust your dose." Are you able to dilute cleanly?
then your only choice is dry dose
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