Filtration in the Planted Tank - Tropical Fish Keeping - Aquarium fish care and resources
 
LinkBack Thread Tools
post #1 of 3 Old 01-30-2014, 02:12 PM Thread Starter
Question Filtration in the Planted Tank

The aquarium setup guide from Aqueon states the following in the section concerning filtration:

"Keeping your aquarium water healthy for aquatic life includes making sure that there is plenty of dissolved oxygen for your fish to extract from the water. This is especially true in aquariums filled with live plants and those that may become a little overheated in the summer. Both situations can lead to dangerously reduced dissolved oxygen levels, especially if the bio-load (fancy term for fish & plant occupancy level) is excessive. Your Aqueon Power Filter helps increase dissolved oxygen levels day and night by pumping more oxygen into water filtered through the wet/dry stage, and by the filtered water’s exposure to air as it cascades out of the filter on its way back into the aquarium."

I'm confused by the statement regarding live plants. Live plants require CO2 and produce O2, don't they? So how does an aquarium "filled with live plants" lead to "dangerously reduced" oxygen levels? Moreover, isn't it possible that excessive movement at the surface or across the filter could inhibit plant growth by driving out CO2?

Am I misunderstanding something, or does the marketing department at Aqueon have it wrong?
Diver Down is offline  
Sponsored Links
Advertisement
 
post #2 of 3 Old 01-30-2014, 02:29 PM
Member
 
Quote:
Originally Posted by Diver Down View Post
The aquarium setup guide from Aqueon states the following in the section concerning filtration:

"Keeping your aquarium water healthy for aquatic life includes making sure that there is plenty of dissolved oxygen for your fish to extract from the water. This is especially true in aquariums filled with live plants and those that may become a little overheated in the summer. Both situations can lead to dangerously reduced dissolved oxygen levels, especially if the bio-load (fancy term for fish & plant occupancy level) is excessive. Your Aqueon Power Filter helps increase dissolved oxygen levels day and night by pumping more oxygen into water filtered through the wet/dry stage, and by the filtered water’s exposure to air as it cascades out of the filter on its way back into the aquarium."

I'm confused by the statement regarding live plants. Live plants require CO2 and produce O2, don't they? So how does an aquarium "filled with live plants" lead to "dangerously reduced" oxygen levels? Moreover, isn't it possible that excessive movement at the surface or across the filter could inhibit plant growth by driving out CO2?

Am I misunderstanding something, or does the marketing department at Aqueon have it wrong?

I think what they are worried about is the pH drop (carbon dioxide increase) at night when the plants sleep.

In my non circulated non filtered tanks I simply don't have that problem. The lowest ph (just before lights out) is still much higher then the highest non plant ph. So the tank has a much lower co2 level with plants then without.

but it could be that circulation would actually decrease the oxgen and increase co2 when the lights are on. Which might result in a more significant ph drop with higher co2 and lower oxygen during lights out.

I just don't see that in my tanks.


my .02

maintain Fw and marine system with a strong emphasis on balanced, stabilized system that as much as possible are self substaning.

have maintained FW systems for up to 9 years with descendants from original fish and marine aquariums for up to 8 years.

With no water changes, untreated tap water, inexpensive lighting by first starting the tank with live plants (FW) or macro algae( marine)

see: http://www.tropicalfishkeeping.com/a...-build-295530/
beaslbob is offline  
post #3 of 3 Old 01-30-2014, 02:56 PM Thread Starter
Interesting. Thank you. In your tanks, roughly how much of a drop does occur between the highest daylight pH (lowest CO2) and the lowest nighttime pH (highest CO2)?
Diver Down is offline  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
What filtration do you really need in a planted tank? elitejp Beginner Freshwater Aquarium 7 02-09-2012 11:46 AM
New 75G Planted Tank: Filtration / Amount of Plants zfarsh Beginner Planted Aquarium 10 05-22-2011 02:04 PM
filtration in planted 55 gallons smoodgie6 Beginner Planted Aquarium 5 02-17-2011 09:17 AM
filtration in a 55 gallon planted tank johnnyjiron Beginner Planted Aquarium 18 12-02-2009 05:35 PM

Posting Rules  
You may not post new threads
You may not 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