Time without CO2? - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 10-15-2011, 10:21 PM Thread Starter
Algae Grower
PTrader: (0/0%)
Join Date: Oct 2011
Location: Canada
Posts: 15
Time without CO2?

I'm looking for advice on how long my tank can safely go without my pressurized C02 system running?

It's a 10 gallon with a roughly 70% and growing carpet of HC (Dwarf baby tears) and some Micro swords. Obviously the HC can be a very C02 hungry species so Im uneasy about shutting off my system which is pressurized without a pricey solenoid/timer unit.

I have to leave home for 4 days for work and was wondering if it would be ok? My lights are on timers and i know my fish will be fine, but what about my precious HC?

I guess my only other option is to leave the C02 on a lower setting continuously. I use a hang on back penguin bio wheel filter so it does a good job of making surface agitation and keeping my tetras from oxygen deprivation.

I normally just manually turn the CO2 on each morning and off at night.

Any thoughts please?
Mistral is offline  
Sponsored Links
post #2 of 5 (permalink) Old 10-15-2011, 11:29 PM
Planted Tank Guru
DarkCobra's Avatar
PTrader: (5/100%)
Join Date: Jun 2004
Location: Baton Rouge, LA
Posts: 3,350
A biowheel is normally enough to ensure plenty of oxygen at night.

If you have time before your trip, you might try running the CO2 all night long, keep an eye on things, and see what happens. Chances are, unless you have the CO2 turned up beyond 30ppm and almost to the point of fish gasping, it'll be alright.

Otherwise, I'd do one of the following:

1) Put a cheap aerator and mechanical timer in to aerate the tank at night.
2) Turn off both CO2 and lights for the four days. Consider it a blackout, like the ones used to treat algae infestations. The plants may be set back a bit, but should quickly rebound.
DarkCobra is offline  
post #3 of 5 (permalink) Old 10-15-2011, 11:32 PM
Wannabe Guru
PTrader: (16/100%)
Join Date: Aug 2011
Location: New York City.
Posts: 1,974
How is your CO2 being diffused? If with a powerhead, you can put the powerhead on a timer. Just leave the CO2 ON. As long as CO2 isn't effectively being dissolved, it would not accumulated. Of course, you can put an air stone and put the air pump on a timer too.
tetra73 is offline  
post #4 of 5 (permalink) Old 10-15-2011, 11:41 PM
Wannabe Guru
Higher Thinking's Avatar
PTrader: (23/100%)
Join Date: Mar 2011
Location: Oregon State Beavers!
Posts: 1,533
All these seem like very reasonable suggestion. I just had some personal stuff come up last week and had to go about 6 days without my co2 system and I run EI dosing and a great deal of HO lighting on my 75gal. I just turned off half the lights and stopped dosing. The plants don't look much different and no issues with algae.
Higher Thinking is offline  
post #5 of 5 (permalink) Old 10-16-2011, 01:22 AM Thread Starter
Algae Grower
PTrader: (0/0%)
Join Date: Oct 2011
Location: Canada
Posts: 15
Thanks for the advice everyone.

I use a ceramic type diffuser placed at the bottow of my tank. I think I will try a combination of some of your suggestions and turn down my CO2 to under 1 drop per second and turn half my lighting source off. I may also drop the tank water level another half inche to help with the waterfall effect coming out of my filter which really helps create lots of surface agitation and oxygen bubbles.

Since this is my first time growing HC and its actually doing pretty well I dont want to risk cutting the CO2 completely.

This plant seems like it relies on a CO2/Flourish Excel life support!
Mistral 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