EI for dummies..

Discussion in 'Planted Tank Equipment' started by shihr, Jan 11, 2012.

  1. Tersius
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    Tersius Green fingers

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    Do I include my canisters water volume when I do the calculations for EI & Plantex?
     
  2. GDT78
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    GDT78 Plant menace

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    Just the tank is fine.

    Thats why its called estimative index.
     
  3. Clare
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    Clare Aquascaper

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    I didn't put into consideration my canister filter. Only the amount that my tank takes - either way, it doesn't really matter. As long as your plants are thriving and that they are growing well, with the right lighting - then you are set.
     
  4. GDT78
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    GDT78 Plant menace

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    Remember 50% weekly water changes is the golden rule for E.I.
     
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  5. Tersius
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    Tersius Green fingers

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    Reason for asking is I tweaked a big ass canister which is almost 30L big to run with my 3ft...
    How will I know if I am going to overdose now?
    What will the plants show me?
     
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  6. mik786
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    mik786 Green fingers

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  7. Tersius
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    Tersius Green fingers

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    Okay thanx...
    When one goes more technical into this , think about it- if you put one teespoon of sugar into a cup you taste the sugar right? But , as the cup gets bigger you will eventually not taste that one teespoon of sugar any more?
    Thats how I see it...
     
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  8. Greystoke
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    Greystoke Specialist

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    Hold it guys. Strictly speaking, the EI calculations are based on the TOTAL volume of water in circulation. However, a canister does not contain a major part of the systems volume. Perhaps no more than a few percent, meaning that if you leave it out it will not introduce a big error, but people that operate a sump system must take the volume of the sump into consideration, as sumps can have big volumes (mine is ±100L).
     
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  9. Tersius
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    Tersius Green fingers

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    I agree yes...
    My canister is like a 1/3 of my total water volume...
     
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  10. Greystoke
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    Greystoke Specialist

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    In that case, you should (in my opinion) include the volume of the canister filter.
     
  11. Tersius
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    Tersius Green fingers

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    Thanx...
    I did
     
  12. Clare
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    Clare Aquascaper

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    You do have a point. I measured my canister filter because a friend asked out of curiosity. Total came to 4.5L. I had to add an extra 5L to my tank after priming the filter. I should take that into consideration...

    Sent from my D5503 using Tapatalk
     
  13. Fred van Vuuren
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    Fred van Vuuren Green fingers

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    Ive been doing this for about a month now and can with ceirtenty say that I can see a vast difference in my plants
     
  14. Waldip
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    Waldip Green fingers

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    i'm still using Scape for now but i also want to try this still
     
  15. Luis Embalo
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    Luis Embalo Valued Contributor

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    Which part of Estimative don't you get? :)

    Just dose.. look at the plants... adapt the dosing.. look again.. adapt..

    EI is not an exact science.. actually no dosing is.

    You cannot dose this orbthat amount and walk away.. it is a daily review of what the plants are telling you.

    Sent from my SM-G800F using Tapatalk
     
  16. Fred van Vuuren
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    Fred van Vuuren Green fingers

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    I agree . I have had to change the levels of iron and potasium I dose to get better results .
    Use the calculator as a good starting point and then look at what the plants are doing ......
    Give the plants a chance to adapt to the ferts and then read up on what you see .
     
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  17. Tersius
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    Tersius Green fingers

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    Okay stupid question , Lets say I decide to get some scape complete for replacing EI , can I still mix up some EI & lets say add some once a week? Just to add that extra bit of macro...
    Or will the two counter act with each other?
    Also same with Plantex maybe add some once a week?

    Sent from my GT-I9190 using Tapatalk
     
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  18. Luis Embalo
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    Luis Embalo Valued Contributor

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    It will work just fine.. just dose on different days.

    Sent from my SM-G800F using Tapatalk
     
  19. GroenVissie
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    GroenVissie Green fingers

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    I would like to know if it is at all possible to change the APSA calc so it accommodates Seacham Trace but also give the total values of the other elements such as Boron; Manganese; Molybdenum; Sodium and others as? Please
     
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  20. f-fish+plants
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    f-fish+plants Aquascaper

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