Greg Watson dosing questions? - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 05-16-2005, 02:58 AM Thread Starter
Algae Grower
PTrader: (0/0%)
Join Date: Apr 2005
Location: Tifton Ga
Posts: 100
Greg Watson dosing questions?

Alright I finnally broke down and ordered some dry fertzs from GW's. I need to know how to dose. I have read that EI is the way to go. What the heck is EI.
I know it stands for estimated index, but my estimates will probably be way off. I have a 75 gal tank with medium plant load and a med/high fish load. This is what I bought: PotassiumPhosphate, PotassiumSulfate, Potassium Nitrate, and Plantex CSM+B Plus Extra Iron. If anyone could help it would be greatly appreciated. Leamons terms please I am a dumb @&&.
qoperator is offline  
Sponsored Links
post #2 of 3 (permalink) Old 05-16-2005, 03:05 AM
Planted Tank Enthusiast
PTrader: (0/0%)
Join Date: Feb 2004
Location: grapevine, tx
Posts: 539
hey there-
EI implies that you are estimating that your tank needs potassium or nitrate or something...not that you are estimating how much the tank needs.
visit the fertilator or a different site for the amounts your tank may need.
if you search for Estimative Index in the search function, you'll get a message saying that there are too many threads focused on that topic, so try Estimative Index Confusion or Barr Confusion or some other arrangement of the words "estimative" "index" "question" "tom barr" and "confusion". this will give you lots and lots of threads with a great deal of useful information.
you may also want to check out the barr report or this page:
there are a lot of pros and a lot of cons for EI and the decision to follow it needs to be made by you in regards to your experience, your dedication and your attention to detail!
good luck and keep asking questions!

He who dares to teach must never cease to learn.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

30 gallon tall, pressurized CO2...killer lights
50 gallon long, killer filtration, low tech otherwise
Kris is offline  
post #3 of 3 (permalink) Old 05-16-2005, 03:47 PM
PTrader: (0/0%)
Join Date: Nov 2003
Posts: 2,165
After reading Tom's article on EI, you can use Chuck's calculator to determine how much you need to dose (After testing of course) to reach your target levels of nutrients.

If you plan to dry dose, set the amount of water to use to 1mL, and that'll tell you how much it'll increase the tank if you were to add the fert directly to the tank ( or premixed in water then added to the tank...versus making a dosing solution)

I prefer to download Chuck's calculator, as it has an option for dry dosing and stock solution.
malkore is offline  


Quick Reply

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome