Powerhead or No Powerhead
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > Specific Aspects of a Planted Tank > DIY


Reply
 
Thread Tools Display Modes
Old 10-19-2009, 04:28 AM   #1
urbguy
Planted Tank Obsessed
 
urbguy's Avatar
 
PTrader: (1/100%)
Join Date: Sep 2009
Location: Fairfax, Virginia
Posts: 395
Default

Powerhead or No Powerhead


So, I want to add co2 to my tank. I want to invest in a powerhead because i know thats one of the best ways to diffuse co2. also, the ceramic diffusers are also very interesting, it takes out the powerhead but it has it's own concenquences i.e. not having build enough pressure to actually diffuse. also i've heard that ceramic tiles don't really diffuse that much co2 as it floats to the top anyway. but the powerhead concept has it's own drawbacks as well. i read in a thread by welchrock about how a powerhead has turned his fishes ill. i don't think that a small powerhead that will pump in water will hinder fishes that much will it?
urbguy is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 10-19-2009, 04:33 PM   #2
EdTheEdge
Wannabe Guru
 
EdTheEdge's Avatar
 
PTrader: (9/100%)
Join Date: Jan 2007
Location: Lomita,CA
Posts: 1,777
Default

I use a Rio 50 to diffuse CO2 in my 25Gal. It works like a charm! Beware that it is not the most efficient method but it works really well if you are on a budget.
__________________
90 Gal - 2 Eheim 2217s - 2232 - 4 Rio 50s - 4X96watts CF - Flourite - 2X300w Visitherm - Pressurized CO2
EdTheEdge is offline   Reply With Quote
Old 10-19-2009, 04:35 PM   #3
Hoppy
Planted Tank Guru
 
Hoppy's Avatar
 
PTrader: (74/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 18,789
Default

Unless you have fish that just can't deal with water currents a powerhead isn't going to cause harm to the fish. You can use one of several methods for reducing the "blast" of water from a powerhead - one of the little diffusers that come with most powerheads, used to spread out the flow, or a spray bar on the outlet, or directing the outlet along the rear tank glass, etc. I have used all three of those methods and they worked.
__________________
Hoppy
Hoppy is offline   Reply With Quote
Old 10-19-2009, 07:14 PM   #4
urbguy
Planted Tank Obsessed
 
urbguy's Avatar
 
PTrader: (1/100%)
Join Date: Sep 2009
Location: Fairfax, Virginia
Posts: 395
Default

i went out and got a powerhead for a 10 gal. it says that the speed is 80 gallons an hour, and there is a switch to make the current even lower. i think i got a good powerhead because i plan to use this kind of set up. http://farm4.static.flickr.com/3311/...a49a21ea9e.jpg
would this be a good way to diffuse that co2?
urbguy is offline   Reply With Quote
Old 10-19-2009, 07:25 PM   #5
urbguy
Planted Tank Obsessed
 
urbguy's Avatar
 
PTrader: (1/100%)
Join Date: Sep 2009
Location: Fairfax, Virginia
Posts: 395
Default

actually something like this.
http://www.youtube.com/watch?v=NqJSxnXJVtg

which would be a better choice they essentially do the same thing.

Last edited by urbguy; 10-19-2009 at 07:26 PM.. Reason: adding info
urbguy is offline   Reply With Quote
Old 10-21-2009, 04:03 PM   #6
EdTheEdge
Wannabe Guru
 
EdTheEdge's Avatar
 
PTrader: (9/100%)
Join Date: Jan 2007
Location: Lomita,CA
Posts: 1,777
Default

Quote:
Originally Posted by urbguy View Post
actually something like this.
http://www.youtube.com/watch?v=NqJSxnXJVtg

which would be a better choice they essentially do the same thing.
That's ingenius! But I suspect that it is not as efficient as it appears. Still needs a little tweaking IMO.
__________________
90 Gal - 2 Eheim 2217s - 2232 - 4 Rio 50s - 4X96watts CF - Flourite - 2X300w Visitherm - Pressurized CO2
EdTheEdge is offline   Reply With Quote
Old 05-16-2010, 03:56 AM   #7
Hilde
Planted Tank Guru
 
Hilde's Avatar
 
PTrader: (1/100%)
Join Date: May 2008
Location: Mableton, GA
Posts: 4,526
Default


Here is one I found which the current from the powerhead can still circulate the water.
Hilde is offline   Reply With Quote
Old 05-16-2010, 04:20 PM   #8
Hoppy
Planted Tank Guru
 
Hoppy's Avatar
 
PTrader: (74/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 18,789
Default

I think the best use of a powerhead with CO2 is to run the CO2 bubbles through the powerhead inlet, so the rotor chops them into fine bubbles and then blows them around the tank. If you modify the rotor by cutting each paddle into a couple of paddles, as Tom Barr does, you get even better chopping of the CO2 bubbles. You still get the water circulation benefits from the powerhead too.
__________________
Hoppy
Hoppy is offline   Reply With Quote
Old 05-16-2010, 05:16 PM   #9
jmowbray
Wannabe Guru
 
PTrader: (18/100%)
Join Date: Dec 2009
Location: Standish, MI.
Posts: 1,826
Default

Quote:
Originally Posted by urbguy View Post
i went out and got a powerhead for a 10 gal. it says that the speed is 80 gallons an hour, and there is a switch to make the current even lower.
Can you share what the make and model is?

Also is there a company out there that makes powerheads that instead of having the fin to fan out the flow, have a miniature/medium spray bar that attaches to the output?
jmowbray is offline   Reply With Quote
Old 05-16-2010, 07:02 PM   #10
Hoppy
Planted Tank Guru
 
Hoppy's Avatar
 
PTrader: (74/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 18,789
Default

Quote:
Originally Posted by jmowbray View Post
Can you share what the make and model is?

Also is there a company out there that makes powerheads that instead of having the fin to fan out the flow, have a miniature/medium spray bar that attaches to the output?
Remember, this is the DIY forum! We make our own spray bars, not buy them! We do this between snacking on nails and sipping PVC glue
__________________
Hoppy
Hoppy is offline   Reply With Quote
Old 05-16-2010, 09:36 PM   #11
Swan900
Planted Tank Enthusiast
 
Swan900's Avatar
 
PTrader: (0/0%)
Join Date: Apr 2010
Location: London, England
Posts: 538
Default

Just to let you know that I have used the Ceramic method in the glass diffuser. I had the perfect amounts of CO2 in my water. The trick is to put it nearest the substrate as posible to allow the miniscule bubbles more time in the water to diffuse.

Also it has been argued that the glass diffusers do not work with DIY CO2...but it has with me and my friend with just a 2L bottle. Also many others have had great success too as found out in one of my threads! The only problem with this is that you will have to clean the diffuser more often than you would with pure canister CO2. Are you using DIY CO2 or CO2 from a cannister?

Just a little help if you decide to return your powerhead and use a diffuser!
__________________
I Guess You Could Call Me... H y d r o p h i l i c

** Fluval Pimp #21 **

17 Gallon Planted Room Tank
6.3 Gallon Planted Nano
Swan900 is offline   Reply With Quote
Old 05-16-2010, 11:11 PM   #12
CaffeinatedCake
Planted Tank Enthusiast
 
CaffeinatedCake's Avatar
 
PTrader: (10/100%)
Join Date: Jun 2008
Location: Southern California
Posts: 535
Default

Quote:
Originally Posted by Swan900 View Post
Just to let you know that I have used the Ceramic method in the glass diffuser. I had the perfect amounts of CO2 in my water. The trick is to put it nearest the substrate as posible to allow the miniscule bubbles more time in the water to diffuse.

Also it has been argued that the glass diffusers do not work with DIY CO2...but it has with me and my friend with just a 2L bottle. Also many others have had great success too as found out in one of my threads! The only problem with this is that you will have to clean the diffuser more often than you would with pure canister CO2. Are you using DIY CO2 or CO2 from a cannister?

Just a little help if you decide to return your powerhead and use a diffuser!
+1 to this.

The reason some people think it won't work with DIY Co2 and claim it's from the lack of constant pressure is because some of the ceramic tiles are clogged by ceramic [and normal] dust and what not.

This happened to me with one I purchased, i couldn't even blow through the thing a smidge!

So I let it soak over night in a very VERY mild solution of bleach water, then I let it soak for another day in a half water half water clarifier.. thing, i forget the name, and bam, it worked like a charm .

Some people just get unlucky and blame it on the source of CO2 rather then the chance that their tile is clogged .
CaffeinatedCake is offline   Reply With Quote
Old 05-17-2010, 02:49 AM   #13
csmith
Planted Member
 
PTrader: (18/100%)
Join Date: Apr 2010
Location: Colorado
Posts: 205
Default

Quote:
Originally Posted by Hoppy View Post
I think the best use of a powerhead with CO2 is to run the CO2 bubbles through the powerhead inlet, so the rotor chops them into fine bubbles and then blows them around the tank. If you modify the rotor by cutting each paddle into a couple of paddles, as Tom Barr does, you get even better chopping of the CO2 bubbles. You still get the water circulation benefits from the powerhead too.
+1. A Mini Jet 404 on my 10 gallon worked like a champ.
csmith is offline   Reply With Quote
Old 05-17-2010, 03:20 AM   #14
farmhand
Planted Tank Enthusiast
 
farmhand's Avatar
 
PTrader: (5/100%)
Join Date: Jun 2009
Location: Central California
Posts: 530
Default

Quote:
Originally Posted by Hoppy View Post
I think the best use of a powerhead with CO2 is to run the CO2 bubbles through the powerhead inlet, so the rotor chops them into fine bubbles and then blows them around the tank. If you modify the rotor by cutting each paddle into a couple of paddles, as Tom Barr does, you get even better chopping of the CO2 bubbles. You still get the water circulation benefits from the powerhead too.
What % loss of flow would you get after cutting up the blades?
__________________
farmhand aka Clifford aka Grandpa
20gal Tall
farmhand is offline   Reply With Quote
Old 05-17-2010, 04:56 PM   #15
Hoppy
Planted Tank Guru
 
Hoppy's Avatar
 
PTrader: (74/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 18,789
Default

Quote:
Originally Posted by farmhand View Post
What % loss of flow would you get after cutting up the blades?
Not very much. I drilled holes in the paddles of a couple of powerhead rotors, and didn't see a visible reduction in flow. This kind of pump just swirls the water so centrifugal force slings it out the outlet port. Nothing has to fit closely to make this work well. A lot of the "needlewheel" modifications to powerheads leave you with what would appear to be a non-functional rotor, but they still pump water.
__________________
Hoppy
Hoppy is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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

Forum Jump


All times are GMT. The time now is 10:14 AM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012