If your water's alkalinity is 0, what degree KH would you raise it to? - The Planted Tank Forum
View Poll Results: If your water's alkalinity is 0, what degree KH would you raise it to?
1 dKH 0 0%
2 dKH 1 4.76%
3 dKH 4 19.05%
4 dKH 8 38.10%
5 dKH 5 23.81%
6 dKH 0 0%
7 dKH 1 4.76%
8 dKH 2 9.52%
9 dKH 0 0%
10 or more dKH 0 0%
Voters: 21. You may not vote on this poll

LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 01-01-2006, 12:09 PM Thread Starter
Wannabe Guru
Hypancistrus's Avatar
PTrader: (0/0%)
Join Date: Oct 2004
Location: West Michigan
Posts: 1,032
Question If your water's alkalinity is 0, what degree KH would you raise it to?

Same as with the GH thread...

I do realize that different plant species have different preferences, so there is a pretty big factor of which species you want to keep. But assume you have a tank with lots of different species, perhaps without any of the extremely "fussy" species (like Tonina). Or perhaps with. Vote anyways.
Hypancistrus is offline  
Sponsored Links
post #2 of 6 (permalink) Old 01-01-2006, 01:52 PM
Wannabe Guru
Spar's Avatar
PTrader: (3/100%)
Join Date: Aug 2003
Location: Dallas
Posts: 1,018
3 is both still soft and gives plenty of room for a little KH depletion over time without the fear of a pH crash.

If I get time I will post the graph I made that shows the how fast pH drops after an incremental drop of KH less than 2d. This is in a 3ppm co2 environment.

450g Planted Discus Tank - Work in Process!
Spar is offline  
post #3 of 6 (permalink) Old 01-01-2006, 02:10 PM
Planted Tank Enthusiast
PTrader: (30/100%)
Join Date: Oct 2003
Location: Easton, Maryland
Posts: 774
I voted for 8 because I like to have PH of around neutral, but a little less. So 8 degrees of KH and a PH of 6.8 would give about 40 ppm of CO2. Those numbers would be pretty stable. I just like it that way because it can support a broad range of fish.
Fosty is offline  
post #4 of 6 (permalink) Old 01-03-2006, 05:48 AM
Planted Tank Guru
Betowess's Avatar
PTrader: (27/100%)
Join Date: Dec 2004
Location: Skagit County, Washington State
Posts: 3,199
I'll take 5 dKH because its easier to get 30plus ppm CO2 that way.

Three Tanks...Eheim 2128 & XP3-90G, Eheim 2128-65G, Eheim 2232-25G.... Tek 4x54 watt T5-90G, Aqualight 96watt PC 65G low tech, 65 watt Aqualight-25G.... Hydors-90G & 65G ... Flourite in 90, 65, & 25 Gallons, .... Auto Water Change/Auto dosing on 90 & 65 gallon..... AGA member......
Betowess is offline  
post #5 of 6 (permalink) Old 01-03-2006, 04:24 PM
PTrader: (0/0%)
Join Date: Nov 2003
Posts: 2,165
4dkH, just to have a little extra buffering over 3dKh...assuming CO2 injection is planned.
malkore is offline  
post #6 of 6 (permalink) Old 01-04-2006, 03:34 AM
Planted Tank Guru
PTrader: (84/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 21,012
KH Preference

I am raising my near zero KH now. I have been trying 4 degrees, but that gives me a PH that is in a hard to read area of the KH kit color chart. So, today I raised it to 8, and it is much easier to more accurately tell how much CO2 I am injecting.

Hoppy 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