How much, im lost:( - The Planted Tank Forum
Old 10-15-2012, 12:24 AM Thread Starter
Algae Grower

Join Date: Sep 2012
Location: Mass.
Posts: 58
How much, im lost:(

I have 300 gallons of water with heavily planted new plants.
I'm getting frustrated trying to figure how much to dose with the EI method.
I'd like to do 30% water changes. I just cant seem to grasp How much to start dosing with (ball park) so i can test and go from there. I checked the calculator thing out and i am now even more lost. I realize its dosing more nutrients than needed and WC resets it, i just cant seem to figure out what general amount to dose with. I asked my 5 year old to figure it out for me, she went to go get some crayons:/

sump pimp #19

Old 10-15-2012, 12:51 AM
Surrounded by Blyxa

Join Date: Jul 2011
Location: Texas
Posts: 1,510
Use the calculator. It tells you how much to add precisely. Test at the end of the week before and after WC. If you need to add more based off that, add more. If you,need to add less, add less.

Sent from my iPad using Tapatalk HD
TexasCichlid is offline
Old 10-15-2012, 01:11 AM Thread Starter
Algae Grower

Join Date: Sep 2012
Location: Mass.
Posts: 58
Quote:
Originally Posted by BreakingBread View Post
I checked the calculator thing out and i am now even more lost. /
thats my issue.

sump pimp #19

Old 10-15-2012, 01:13 AM
Planted Member

Join Date: Aug 2012
Location: Ann Arbor, MI USA
Posts: 284
EI dosing from sticky

40~60gal
50% H20 change-weekly
1/2 Tsp-KN03 3x a week
1/8 Tsp-KH2P04 3x a week
10ml or 1/8Tsp-Trace 3x a week
Optional
2-4ml-Fe/Iron 3x a week

This is the ball park to start in for a 40 - 60 gallon tank. Multiply by 5ish and go from there.

2.5 tsp kno3 3x week
5/8 tsp kh2po4 3x week
5/8 tsp CSM+B 3x week

That's what I would try, and sound right to me as its about twice as much as I used to dose in my 150 gallon.
Sotty is offline
Old 10-15-2012, 01:53 AM
Planted Tank Guru

Join Date: Feb 2010
Location: Newbury Park, CA
Posts: 4,182
^+1

Just do it!

I got instant results from dosing nitrate. The tank was under a massive green water siege and a daily 1/2 teaspoon of potassium nitrate stump killer cleared the 150 gallon tank in 4 days. Each day I could see further into the tank. I was sold on using NPK+micros after that!
Kathyy is offline
Old 10-15-2012, 01:53 AM
Planted Tank Enthusiast

Join Date: May 2012
Location: West Palm Beach, FL
Posts: 707
Here are the concentrations you are aiming to add with every dose, roughly:

NO3: 7.5ppm
PO4: 1.3ppm
Traces: .5ppm Fe (assuming CSM+B as being used)

So, using your given 300g of water, and referencing the dosing calculator, we can calculate this schedule:

KNO3: 3x per week, 2.5 tsp + 1/8 tsp resulting in 7.37 ppm, close enough. Or, in grams, weigh out 13.9g.
KH2PO4: 3x per week, 1/4 + 1/8 tsp resulting in 1.29 ppm. Or, again, in grams weigh out 2.1g.
Traces: 3x per week, 2 tsp resulting in 0.49ppm. In grams, 8.7g

With any dosing scheme, watch for deficiencies to crop up, and keep excellent circulation in the tank.
Trickerie is offline
Old 10-15-2012, 03:04 AM Thread Starter
Algae Grower

Join Date: Sep 2012
Location: Mass.
Posts: 58
sounds great, thank you all!

sump pimp #19
Old 10-15-2012, 05:41 AM
Planted Member

Join Date: Aug 2012
Location: Ann Arbor, MI USA
Posts: 284
good luck!
Sotty is offline

Message:
Options

## Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.

User Name:
OR

## Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.