Potassium Level - The Planted Tank Forum
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 02-27-2010, 05:00 PM Thread Starter
Algae Grower
 
PTrader: (4/100%)
Join Date: Feb 2010
Location: NY
Posts: 100
Potassium Level

I just checked my phosphate level and it was about 10ppm. Have almost 0ppm of PO4 from tap. I dose 1/2tsp K2SO4(have a high fish load) and 1/8tsp KH2PO4 and trace as per the E.I method. I'm going to stop using KH2PO4 til phosphate levels come down a bit. Question is will I run a potassium deficiency by not dosing KH2PO4?
jimmah is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 02-27-2010, 05:09 PM
Planted Tank Guru
 
wkndracer's Avatar
 
PTrader: (68/100%)
Join Date: Mar 2009
Location: Citrus County,Florida
Posts: 6,186
K2SO4 = potassium, balance up if needed.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

If at first you don't succeed,,, keep kicking it
RubberSideDownOnTheLanding,
2-75g planted, 3-55g planted, 110g w/30g sump, 2018 update returning to sanity (Nutz)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
wkndracer is offline  
post #3 of 9 (permalink) Old 02-27-2010, 05:31 PM Thread Starter
Algae Grower
 
PTrader: (4/100%)
Join Date: Feb 2010
Location: NY
Posts: 100
Lol. Thanks, had I actually thought about it for a minute......
jimmah is offline  
 
post #4 of 9 (permalink) Old 02-27-2010, 09:35 PM
Planted Tank Guru
 
PTrader: (84/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 21,012
Don't ever rely on a test kit to tell you how much of anything is in the water unless you first calibrate the test kit. The test results mean very little without that calibration. Uncalibrated test kits might give an indication of changes in the concentration of something in the water over time, but without a calibration you can't say how much you actually have at any one time.

Hoppy
Hoppy is offline  
post #5 of 9 (permalink) Old 02-27-2010, 10:24 PM
Banned
 
Left C's Avatar
 
PTrader: (19/100%)
Join Date: Nov 2003
Location: Burlington, NC
Posts: 5,009
Quote:
Originally Posted by jimmah View Post
... I dose ... 1/8tsp KH2PO4 as per the E.I method. I'm going to stop using KH2PO4 til phosphate levels come down a bit. Question is will I run a potassium deficiency by not dosing KH2PO4?
You shouldn't run into a K deficiency from not dosing KH2PO4 because there isn't much K in your dose. As an example ...

1/8 tsp KH2PO4 in 50 gal = 1.0 ppm K and 2.6 ppm PO4

EHEIM PIMP #164
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Classic 2011, Classic 2213, Classic 2217, ECCO 2236, Pro II 2028, Liberty 2040, Liberty 2042

VICTOR PIMP #1
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
VTS253A-1993, VTS250B-580, VTS253D-320, HPT500-40-350-4M, SGT500-40-4F-DK
Left C is offline  
post #6 of 9 (permalink) Old 02-28-2010, 01:12 AM
Algae Grower
 
PTrader: (0/0%)
Join Date: Nov 2009
Location: Harrisburg, PA
Posts: 73
Quote:
Originally Posted by Hoppy View Post
Don't ever rely on a test kit to tell you how much of anything is in the water unless you first calibrate the test kit. The test results mean very little without that calibration. Uncalibrated test kits might give an indication of changes in the concentration of something in the water over time, but without a calibration you can't say how much you actually have at any one time.
How does one calibrate a testing kit?
itrack4u is offline  
post #7 of 9 (permalink) Old 02-28-2010, 04:16 AM
Banned
 
Left C's Avatar
 
PTrader: (19/100%)
Join Date: Nov 2003
Location: Burlington, NC
Posts: 5,009
Quote:
Originally Posted by itrack4u View Post
How does one calibrate a testing kit?
Hoppy has a sticky in the F&WP forum about making calibration solutions that is really neat.
https://www.plantedtank.net/forums/fe...-chemists.html

EHEIM PIMP #164
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Classic 2011, Classic 2213, Classic 2217, ECCO 2236, Pro II 2028, Liberty 2040, Liberty 2042

VICTOR PIMP #1
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
VTS253A-1993, VTS250B-580, VTS253D-320, HPT500-40-350-4M, SGT500-40-4F-DK
Left C is offline  
post #8 of 9 (permalink) Old 03-01-2010, 02:42 AM
Algae Grower
 
stagger's Avatar
 
PTrader: (2/100%)
Join Date: Apr 2006
Location: New Jersey
Posts: 141
Hi, as for the calibration of the test kits, instead of using Distilled water, can I use Ro/di water?
stagger is offline  
post #9 of 9 (permalink) Old 03-01-2010, 05:10 AM
Planted Tank Guru
 
PTrader: (84/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 21,012
Quote:
Originally Posted by stagger View Post
Hi, as for the calibration of the test kits, instead of using Distilled water, can I use Ro/di water?
Maybe you can. Not all such water sold in grocery stores is free of ions that could mess up the calibration. But, since this method is a crude one anyway, and gives only approximate results, it would probably work fine. And, it would certainly be better than not calibrating at all.

Hoppy
Hoppy is offline  
Reply

Tags
None

Quick Reply
Message:
Options

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

Password:


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

Email Address:
OR

Log-in










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