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After re-examining my calculations this morning I have found my problem. I wasn't according for the atomic weight of the sulphur and oxygen when calculating the Mg PPM. Is it correct that 17g of MgSO4*7H20 in a 500ml bottle 1ml dose contains 0.31302644ppm of Mg Even though the atomic mass for...

After researching James' great information about home made TPN+, I have a few questions (http://www.theplante...uk/allinone.htm) He says to add 17g Magnesium Sulphate Heptahydrate (aka MgSO4*7H20). This is supposed to add 0.39ppm of Magnesium as per the dosing he specifies. I have worked this...

Darrel, Thank you very much for the excellent reply. I have spent the whole day trying to digest the information, and now I have a few questions. Are you saying I should make an FeEDTA liquid mix up first, and then add the rest of the micro nutrients to the solution? Do I need to mix any of...

Before I go into it, please note that I do not want to buy a premade trace mix. I want to make my own. I am making my own fertiliser and I'm looking at whether to use EDPA or DTPA chelator? I've sourced EDPA but cannot find DTPA. Any suggestions? Also could someone explain to me exactly how it...

http://pixelcarworld.com/files/EI%20Dos ... Kindon.xls http://pixelcarworld.com/files/EI%20Dos ... indon.xlsx Andy

Tuesday accidently got deleted when i deleted a column (doh). K2s04 works fine... did you enter the weights? lol What is calcium dosed with, trace or something else? Edit: Tuesday added - First post updated.

:D I've done it. Now includes an tank volume calculator built in. The file is uploaded at the bottom in both office 2000 and office 2007 formats. If it works, and people find it useful, maybe it could be pinned? :shifty: If you find any errors or things that need tweaking let me know. I...

Thats the thing, it wasn't created like this. I used james planted tank to find out how much of X ppm is added, but i forgot that it is dependent on tank size. So i don't think i can impliment it because I don't know the formula relationships between tank size and ppm. Im sure i could figure it...

Well it was designed for personal use anyway, but i figured it might be useful for other people.. well... it still is... aslong as you have a rio 180 :roll: :wink: I just think the way it tells you how say 500g of kn03 will last if you put 30g in 250ml of water etc. Takes the guess work out...

I've just realised a fatal flaw though - I forgot to integrate tank size! Oh well, it's still useful to me as long as I keep this tank :lol: I'm sure i can impliment it if needs be. Andy

Hey - I've made myself a calculator to work out dosing EI and just thought people may be interested. I know there is a calculator on james planted tank but this is set up to make changes more quickly. It also shows you how long a specific weight of chemical will last, and how long a particular...

I used the numbers from your dosing caculator to create the following: If anyones interested maybe we could work together so I can implement a "tank size" into it, as I just used the ppms based on my 180 litre tank, but if you give me the calculations i could impliment tank size into the...

Ah that's that sorted then. Just ordered the 1kg of epsom salts for £2.49 delivered. Is there anything else I should alter before i make my first batch? Is aiming for 24ppm of nitrate okay I should i am for closer to 30? Andy

So If i add: KN03 - 60g per 250ml @ 10ml 3x per week = 24ppm Nitrate & 15ppm Potassium (per week) KH2PO4 - 10g per 250ml @ 10ml 3x per week = 4.5ppm Phosphate & 1.8ppm Potassium (per week) K2SO4 - 50g per 250ml @ 10ml 3x per week = 15ppm Potassium (per week) The first week the tank would have...

Hi, I was just on James planted tank, calculating how to make my EI mixture. I've noticed that by adding the ammounts he says, that i cant get potassium up to anywhere near 30ppm. I have 180 litre tank, and i wanted to dose: KN03 - 60g per 250ml @ 10ml 3x per week = 24ppm Nitrate & 15ppm...

I've actually already got some digital scales so that's not a problem. At the moment i'm just pricing up the "ingredients" Is Potassium Sulphate K2SO4 actually needed, as in james EI method its not actually mentioned in the macro solution Is it best to add it just incase, as the whole point...

Hi guys, I have searched, read, searched, read as much as i phsyically can about EI. But i think i've just confused myself now. I was hoping someone could help me out. I've read this article: http://www.theplantedtank.co.uk/EI.htm My tap water KH is 3, and GH is 5. I already have some TPN+...