Low kh - The Planted Tank Forum
 
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 08-18-2012, 10:52 PM Thread Starter
JSE
Algae Grower
 
PTrader: (1/100%)
Join Date: Jul 2012
Location: Cape Coral
Posts: 123
Low kh

The KH in my tank is extremely low. I use the API test kits and its suppose to go from blue to yellow. Mine goes straight to yellow on the first drop.

Currently plant's only. My ph was 6.4 for the last couple days found out I was killing my HC so I upped the cO2. Now I am somewhere around 6.0 ph.

Should I worry about my KH being so low?

I am going to test ph again after lights out.


Im just rambling mostly lol
JSE is offline  
Sponsored Links
Advertisement
 
post #2 of 2 (permalink) Old 08-18-2012, 11:00 PM
Planted Tank Guru
 
PTrader: (0/0%)
Join Date: Jan 2010
Location: Contra Costa CA
Posts: 11,721
carbonates keep the pH stable. When you add CO2 that drops the pH.
Most fish and plants are just fine with the shift that CO2 creates.

Nitrifying bacteria use the carbonates as a source of carbon.
These bacteria do not grow well when the pH is less than 6.5.
While the tank is a planted tank, and plants are the current bio filter, there ought to be a decent bacteria population, too.

I would add whatever you want to raise the carbonates to at least 2-3 German degrees (2-3 drops in the API test) Baking soda is about the cheapest, and dissolves quickly. Some people worry about the sodium, though. Calcium carbonate will work, too. It adds calcium (obviously) as well as carbonate, and does not dissolve so easily. There are other materials that will add carbonates. Potassium bicarbonate, for example.

You could add things like coral sand, limestone sand or oyster shell grit to the filter (I use nylon stockings for bags). In a tank where I wanted a greater effect I used coral sand blended with the other substrate material.
Diana 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