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Is this the target range after one daily dose, or the target at the end of the week before the water change?
If you need to hear it another way look up James Planted Tank. I liked the way it is presented.

btw
I just re worked my fertilizer solutions using info on his page
Regards
 

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Sorry if this has been said already but im wondering when everyone doses each fert?

a monday to friday list would be nice, im curious if any should be dosed first before others
IT HAS BEEN SAID...... MACROS AND MICROS are dosed on alternating days.
I dose macros Sun, Tues & Thurs
I dose micros on Mon, Wed & Fri

on Saturday I ride my recumbent all day ...LOL & on Sunday before I ride my recumbent I do a 50% water change

When dosing macros it makes no difference which is first just do not do macros & micros on the same day :)

HTH
 

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hilarious post....
suggestion read thread :)
.

short answer - mix it or not
I suggest you use Wets calculator

http://calc.petalphile.com/

one more suggestion PACK & I mean Pack the plants in before using ferts
HTH

Question.... I have Dry Ferts Potassium sulfate and Potassium nitrate just recieved in the mail . No instruction on how to add it to my tank . so how would I add it to my tank?
 

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This post his about Macros only

If a Mod thinks it should be elsewhere of a separate post - please let me know :cool:

I need some help please....
I am surprised that of the many EI posts, I have yet to see one, that deals with multiple tank sizes and solutions. Mostly you see ppl posting for a certain size tank. Well I have all sizes and *think* the idea would be to calculate for the larger tank and then break that down to the number of gallons being dosed

So I thought this would be the place post what and how I mix fertilizers and how many ML of the solution I use. I am hoping a math nerd will check mixes.

I am no expert and welcome comments. I have the following sized tanks:
10 gal, 15 gal, 29 gal, 40 gal, 55 gal and a 70 gal.


I mix 3000 liters at a time.
Macro
N- target 7.5ppm using 601 g of KNO3
P- target 2. ppm using 141 g Kh2PO4
K - target 7.5 ppm using 274 g K2SO4

I use this many ML for 3 X a week for both N + P
10 gal gets 2 ml
15 gal gets 3 ml
29 g gets 7 ml
40 gal gets 10 m
55 gal gets 15 ml
65 gal gets 15 ml


I use this many ML for 3 X a week for K:
10 gal gets 6 ml
15 gal gets 9 ml
29 g gets 21 ml
40g gets 30 ml
55g gets 45 ml
65 g gets 45 ml

I think I go through to many Fertilizers???
Knowing this is EI, I will at times modify what goes in, which always seems to be more, especially with Kn03 ( otherwise I get cano BGA)
You thoughts? Thank you
 

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Some how I knew you would answer. Thank you Diana


Also want to thank you on behalf of the community for your commitment to assist and teach. You are a real Asset to APC
 

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Hello again
I am posting this info based on Diana's reply. If I have made any mistakes please point them out.

I believe this will be very helpful to those doing EI on multiple tanks
I probably missed it even though I have been at APC since 2009.

Q1: How many total gallons am I dosing? (Add up all the tanks)

12 , 40, 65, 29, 55, 15 = 216 gallons
So, how much of each material do I need for 1 week? (do some math with each dose of each material... so many teaspoons per dose, 3 doses per week...
Each dose X 3
* kno3. 10g 30. g
* K2so4. 13.67 g. 41.01 g
* Kh2po4. 1.52. 4.56 g
*
Put this much in the bottles (macros in one bottle, micros in the other)

Q2: How can I best dose? For me, I dose at the rate of 1ml per 3 gallons of tank volume.
So, multiply it out: How many gallons in all the tanks?

216

How many doses in one week? (3) Divide by 3 gallons and call it ml.

216 x 3= 648 ml of H20

Put that much water in each bottle.

Single Dosage per tank ( three times a week)
12 divided by 3= 4 ml
40 divided by 3= 13.3 ml
65 divided by 3= 21.6 ml
29 divided by 3= 9.6 ml
55 divided by 3= 18.3 ml
15 divided by 3= 5 ml

What you wrote below is great advice. I will do this as well since I also dose glut.

Side note: I also dose with glut. I do a similar computation and add a weeks worth of glut to the bottles then top it off with distilled water. The glut minimizes the growth of 'goo' in the bottles. Per a recommendation by a chemist I also add a bit of citric acid to keep the mixture acidic.

Sent from my iPad using Tapatalk
 

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Only one problem... I am re working doses too the higher higher end of EI.
There is a solubility problem when mixing with 600 ml of water.

I want to mix
NO3- 90 grams
P04 - 6.6 grams
K - 75 grams

Solution does not dissolve. I had intended to dose as suggested 1 ml to every 3 gal.

best solution:
1. Should I double the water and double the dose amount?

2. Comments

Thx U
 

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Maybe dose daily and take some test at different times or intervals during the photoperiod. Then its a matter of adjustment as you desire.

As DutchMuch indicates - do a weekly WC anyway
 
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