Randy's Recipe calculation

[fr3n0z]

Hi guys, i would like that someone with more knowledge and math skills can confirm me this. I want to dose Randy recipe alkalinity. I woul like to dose 0.25dkh a day and the daily dose should be around 40ml, my tank is 55L and my dosing container is 1lt ...i need to diluite.

4.7ml of Randy Na2Co3 recipe should up my kh by 0.25 in 100lt mi tank is 55Lt net so is 2.58ml for 55Lt

if i add 2.58ml of recipe to 37.42ml of rodi i should be able to dose 0.25dKH with 40ml of solution.

So, to have a 1l i should add 68.9ml of Randy-s Na2Co3 recipe to 931ml of rodi.... i am right?

 

[ReefTosh]

Firstly, here a little calculator where you can get some dosing info. Put in your tank size, choose what product to use and you can see how much you need to add to raise by how much. (eg, choose 8.0 dkh as starting and then 10dkh as desired and you will see how much you need to add to raise by 2dkh) its what I use for my dosing calculations

Reef Chemistry Calculator

That's sounds about right, your final 1L preparation (68.9ml randys + 931ml rodi) will have about 6.5dkh of alk in it. So about 26 days worth of dosing at 0.25dkh/day, just under 39ml/day.

Good idea to test after starting the dosing just to make sure its all going as planned and your doser isn't over/under dosing.

i'm no maths wizz so someone else may want to verify the numbers too.

 

[fr3n0z]

Firstly, here a little calculator where you can get some dosing info. Put in your tank size, choose what product to use and you can see how much you need to add to raise by how much. (eg, choose 8.0 dkh as starting and then 10dkh as desired and you will see how much you need to add to raise by 2dkh) its what I use for my dosing calculations

Reef Chemistry Calculator

That's sounds about right, your final 1L preparation (68.9ml randys + 931ml rodi) will have about 6.5dkh of alk in it. So about 26 days worth of dosing at 0.25dkh/day, just under 39ml/day.

Good idea to test after starting the dosing just to make sure its all going as planned and your doser isn't over/under dosing.

i'm no maths wizz so someone else may want to verify the numbers too.

thanks man, i've used the calculator to pull out how much recipe i need to dose to raise 1dkh in 55lt...i started from that to try to get to my desired amount in ml/dkh but i wasn't sure my thinking was correct. Especially if i should add 68.9 on 1000ml (so it will be 1069ml) or is it right how i did to get to 1000ml in total. even tough at this concentration i don't think would matter much.

 

[ReefTosh]

it doesn't really matter which way you do it as long as you use the total amount to figure out how much to dose daily. Adding more rodi means having to dose slightly more per day as you are diluting the recipe.

So 1069ml would need to be dived by 26 days (6.5dkh/26days = 0.25dkh/day) to get the daily dosing of 41ml/day or 1000ml would need to be dived by 26 days to get 38.4ml/day.

(Looking at the numbers i think its actually 6.6dkh total so the ml may be ever so slightly different when calculating with the exact numbers, i was rounding)

 

[KStatefan]

Why do you need the daily dose amount to be 40 ml?

 

[fr3n0z]

Why do you need the daily dose amount to be 40 ml?

tank is a small nano 64l gross, 55 net. And dosing pump is a jebao 3.4, probably not the most precise. if dosing is 40ml i can break up in 4 x10ml dose daily in order to spread it during the day. I could probably get out well with 5ml too but i think more diluite is the dose less chanche of big swing there are. then, i probably don't need to dose either but i'd like to try to have less maintenance as possible. Still not sure if daily 1% AWC would be better.