low tech Ferts: EI or Tom Barr's ratio's? - The Planted Tank Forum
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post #1 of 1 (permalink) Old 05-04-2019, 09:20 PM Thread Starter
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low tech Ferts: EI or Tom Barr's ratio's?

In my low tech tank i originally planned to dose to tom barrs recommendations on his site where he discusses non co2 methods. (https://barrreport.com/threads/non-co2-methods.2792/)

However i instead used the dosing calculator for low tech EI dosing/week. i was under the idea that it was the same. however if i use the calculator and compare to his article of what to dose a 20 gallon tank they are note the same but rather the calculator is over double what he mentions is the linked article. so is the article what i should go by, or the calculator. i understand dialing in over time but i'm looking for a starting point as i am relatively new and thought i had this figured out until i noticed this inconsistency.

This is what Tom Barr says to dose for 20 gallons:
" I will add about 1/4 teaspoon per 20 gal tank once every week or two.
This greatly enhances the growth of the plants.
I also will add about 1/8" and 1/32" teaspoon of KNO3 and KH2PO4 respectively once a week or two."

with the calc set for low light EI i came up with this for 20 gallon:
Seachem EQ: 3/4+1/32 tsp
NO3: 1/8+1/32+1/64 tsp
KH2PO4: 1/64 tsp

the main thing that is way off is the equilibrium which is over double and i wonder if it was in the calculator for RO water or what. I'm using tap water with it and i don't know if that's way wrong to do it that way or what.


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