Ph rising when co2 is turned off at night - The Planted Tank Forum
 
LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old 03-09-2012, 06:18 AM Thread Starter
Algae Grower
 
PTrader: (0/0%)
Join Date: May 2010
Location: Australia
Posts: 49
Ph rising when co2 is turned off at night

Hi,
I have a 260ltr half planted tank with no discus in there at the moment and my tank spec are

260ltr
KH 4
1.7wpg of light
pressurized co2 with regulator,solenoid
Sera 1000 reactor hooked up to a eheim 1250 pump
9hrs for lights
Co2 goes on 1hr before lights come on and goes off 1 hour before lights go off
ph at night when the lights go off is 6.8 but in the morning it is 7.7

Thats my issue im running a ph controller just for ph and the ph keeps on going up to much for discus i reckon.

In a month or so im setting up a 600ltr planted discus tank with led lights and don't really want to see that swing in ph. I don't want to run the co2 24/7 due to the risk of loosing discus (as i have already some in the past)

Whats my options on trying to stabilize my ph

Cheers Axl
axl10 is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 03-09-2012, 06:29 AM
TWA
Planted Tank Enthusiast
 
TWA's Avatar
 
PTrader: (0/0%)
Join Date: Jan 2012
Location: Kansas City
Posts: 813
I can't chime in on a way to stabilize the ph, someone does, but I will say that's a pretty huge swing for discus. Probably will result in death, if your lucky just incredibly stressed discus.

Just confirming what you thought.
TWA is offline  
post #3 of 8 (permalink) Old 03-09-2012, 07:14 AM Thread Starter
Algae Grower
 
PTrader: (0/0%)
Join Date: May 2010
Location: Australia
Posts: 49
Yeah no worries i have a couple of suggestions on what to do

1. run the co2 with the ph controller and run a air stone at night

2. run the co2 with the ph controller and just put the return pipe on the filters on the top of the water creating a ripple affect creating o2. Hopefully this might create enough 02 and also the plants will give off o2 as well.

Cheers Axl
axl10 is offline  
 
post #4 of 8 (permalink) Old 03-09-2012, 09:40 AM
Planted Tank Enthusiast
 
PTrader: (0/0%)
Join Date: Jun 2010
Location: Calgary
Posts: 703
Those nightly pH swings due to co2 levels will not affect your discus. I have never had an issue with it in my fish (not discus), I have read such enough in enough places to confirm it - I have read posts by Tom Barr that agree too.
reignOfFred is offline  
post #5 of 8 (permalink) Old 03-09-2012, 09:50 AM Thread Starter
Algae Grower
 
PTrader: (0/0%)
Join Date: May 2010
Location: Australia
Posts: 49
Hopefully your right because i have always been told that the most important thing with discus is good water and a stable ph hence you wont have any problems with diseases.
axl10 is offline  
post #6 of 8 (permalink) Old 03-09-2012, 11:02 AM
Plant Clown
 
kevmo911's Avatar
 
PTrader: (32/100%)
Join Date: Sep 2010
Location: Greensboro, NC
Posts: 4,729
You're gonna want to check in with a discus guru like discuspaul, and/or visit a discus forum and do some reading. With any other fish, I'd say not to worry about them - they'll be perfectly fine. But I just don't know enough about discus and their very specific water quality demands.
kevmo911 is offline  
post #7 of 8 (permalink) Old 03-09-2012, 11:03 AM
Planted Member
 
PTrader: (8/100%)
Join Date: Jan 2012
Location: Maryland
Posts: 200
Your discus will be fine. PH swings due to CO2 injection are not harmful to fish.
ryc120 is offline  
post #8 of 8 (permalink) Old 03-09-2012, 11:51 AM
Planted Member
 
PTrader: (0/0%)
Join Date: Apr 2011
Location: Philly, PA
Posts: 243
I agree that you should worry and take action to try to keep the PH more stable. Most fish don't care about the CO2 PH swings, but those discus are some sensitive little guys. The suggestion of the PH controller would probably work for you, though you will find that your CO2 usage will go up pretty significantly.... during the overnights, you'll need to agitate the surface to introduce oxygen, but by the same token that'll be out gassing the CO2 and will make you use more out of your CO2 tank to keep the PH down at the desired level.
d3snoopy 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