The Rex Reactor - Page 14 - The Planted Tank Forum
Reply
 
LinkBack Thread Tools Display Modes
post #196 of 225 (permalink) Old 06-13-2012, 02:27 AM
Algae Grower
 
Join Date: Apr 2012
Location: Australia
Posts: 51
Thanks guys, great answers. I worry that the flow will be reduced too much on the output side of my canister. I don't think it would get that blocked from dirt on the input side, no more than any other part would.

Lee
Leebee is offline  
Sponsored Links
Advertisement
 
post #197 of 225 (permalink) Old 06-15-2012, 08:07 AM
Algae Grower
 
Join Date: Apr 2012
Location: Australia
Posts: 51
Another question, I don't think we have 1.75 inch pressure pipe here. I can get 50mm, or 30mm, 1.75 inch is about 43mm, we don't have that in Australia. My eheim canister is rated at 1050lph, any ideas on pipe size?

Lee
Leebee is offline  
post #198 of 225 (permalink) Old 07-15-2012, 05:22 PM
Planted Member
 
TheNamelessPoet's Avatar
 
Join Date: May 2012
Location: Vernon, CT
Posts: 156
so am I to understand (sorry for the dumb question) that the co2 is entering from the LOW end and water is flowing from the HIGH end to the LOW end?

I am far from a plumber and fomr wome reason this setup doesn't seem to do anything lol. I know it does its raved about I am just trying to understad the basic physics of it...

><((((º> ¸.·´¯`·.¸¸><((((º> ¸.·´¯`·.¸¸><((((º>
¸.·´¯`·.¸¸><((((º> ¸.·´¯`·.¸¸><((((º>¸.·´¯`·.¸¸><((((º>¸.·´¯`·.¸¸><(( ((º>

TheNamelessPoet is offline  
post #199 of 225 (permalink) Old 07-15-2012, 05:34 PM
Planted Member
 
Mark Fisher's Avatar
 
Join Date: Dec 2011
Location: Rockport, Texas
Posts: 160
This design provides for a counter-current flow, i.e., the CO2 bubbles are going up while the water is being pumped down. The CO2 will dissolve quickly in a counter-current flow.
Mark Fisher is offline  
post #200 of 225 (permalink) Old 07-15-2012, 05:49 PM
Planted Member
 
TheNamelessPoet's Avatar
 
Join Date: May 2012
Location: Vernon, CT
Posts: 156
Quote:
Originally Posted by Mark Fisher View Post
This design provides for a counter-current flow, i.e., the CO2 bubbles are going up while the water is being pumped down. The CO2 will dissolve quickly in a counter-current flow.
Ok it makes a little more sense now thank you. Ug I feel like I am in a fog today.

><((((º> ¸.·´¯`·.¸¸><((((º> ¸.·´¯`·.¸¸><((((º>
¸.·´¯`·.¸¸><((((º> ¸.·´¯`·.¸¸><((((º>¸.·´¯`·.¸¸><((((º>¸.·´¯`·.¸¸><(( ((º>

TheNamelessPoet is offline  
post #201 of 225 (permalink) Old 07-15-2012, 06:57 PM
Wannabe Guru
 
Aquaticfan's Avatar
 
Join Date: Oct 2011
Location: USA
Posts: 1,200
It's actually just basic physics. Gas rises water pressure forced down. The 2 going against each other with enough contact time causes the co2 gas to dissolve in the water and it then will exit the reactor.

You want the co2 inlet just about midwayish down the reactor. To low and the gas will escape into the tank to high not enough contact with the water to dissolve. Length of the reactor and diameter depend on flow of water. More flow larger reactor. I would say 2" at 18" is a good start point for most.

Sun Sun pimp #72
RAOK CLUB # 68

Conway
Aquaticfan is offline  
post #202 of 225 (permalink) Old 08-19-2012, 10:15 PM
Planted Tank Guru
 
herns's Avatar
 
Join Date: May 2008
Location: Los Angeles
Posts: 3,157
Does Rex still exist in TPT? His last post was 2010. His web has a forum too but was ghost town.
herns is offline  
post #203 of 225 (permalink) Old 08-20-2012, 02:43 AM
Wannabe Guru
 
Aquaticfan's Avatar
 
Join Date: Oct 2011
Location: USA
Posts: 1,200
Hey Herns.

Nope, Rex has been missing for sometime. Last info I had on Rex was health issues caused him to no longer be involved in the hobby. His website will be up til it expires. But no one should try to buy anything from his site as you won't get it.
sent from my HTC EVO 3d

Sun Sun pimp #72
RAOK CLUB # 68

Conway
Aquaticfan is offline  
post #204 of 225 (permalink) Old 09-01-2013, 08:51 PM
Planted Tank Enthusiast
 
Join Date: Jan 2013
Location: Boston ma
Posts: 741
I was looken for this for a bit finally found.
newbieplanter is offline  
post #205 of 225 (permalink) Old 09-04-2013, 04:59 AM
Planted Member
 
Join Date: Feb 2013
Location: Norristown Pa
Posts: 295
Anyone know if the bottom has to be a 90 for this to work or will a straight through pipe work?
Psycofc1 is offline  
post #206 of 225 (permalink) Old 09-04-2013, 05:50 AM
Planted Member
 
norbot's Avatar
 
Join Date: Jan 2013
Location: Boise
Posts: 225
Straight should work, but it could depend on the length of the tube and your flowrate. You want contact time with the water and if your flow is too fast and/or the tube too short, you'll end up with bubbles in the tank.

I switched from straight to 90's because the dang thing was so awkward under my stand it kept kinking the tubing, but if you install it wisely, that shouldn't be an issue

Those who believe in telekinetics, raise my hand
—KV



20g journal
29g journal
55g journal
norbot is offline  
post #207 of 225 (permalink) Old 09-04-2013, 02:24 PM
Planted Member
 
Join Date: Feb 2013
Location: Norristown Pa
Posts: 295
Flow rate is probably in the 200's I have a sunsun 304a, its printed rating is 525 I think. Tube length is 24in will be mounted at a slight angle.
Psycofc1 is offline  
post #208 of 225 (permalink) Old 09-06-2013, 09:03 PM
Planted Tank Enthusiast
 
Join Date: Jan 2013
Location: Boston ma
Posts: 741
Quote:
Originally Posted by wakesk8r View Post
I just recently built these out of 2" clear schedule 40.
cool being able to watch how it all actually works
How did u get the lights inside the tubes if they are internal?
newbieplanter is offline  
post #209 of 225 (permalink) Old 09-07-2013, 04:15 AM
Wannabe Guru
 
Join Date: Dec 2003
Location: Taunton ,MA
Posts: 1,694
Quote:
Originally Posted by newbieplanter View Post
How did u get the lights inside the tubes if they are internal?
he use clear see thru pvc? I made one with polycarbonate tube stays clear for a long time. cost a little more.
inkslinger is offline  
post #210 of 225 (permalink) Old 09-07-2013, 01:23 PM
Planted Member
 
jeffdenney's Avatar
 
Join Date: Jun 2013
Location: always dosing
Posts: 288
What if I built one and left the co2 inlet out of it and just used my up inline diffuser upstream of the reactor??? Would that help it dissolve any better?? I have the inline diffuser now but Im tired of a million little bubbles in my tank lol.

Thanks

25 gal.-api renastart xp1 anf xp2- 2 custom spraybars with diy inline heater and water change valve (so key!)-odyssea-4x24w t5ho. 4in raised.-injected co2 via up inline diffuser-florite and sane substrate.-java fern-amazon sword-marsilea minuta-water wisteria (crappy)-dwarf hair grass-anubias afanzeli (spellcheck)-telanthera cardinalis-10 tiger barbs-6 glofish tetras-7 otocinclus -1 german blue ram. females died.-2 albino corydoras. I know need 6
ei dosing and 6 hours light 100%
jeffdenney is offline  
Reply

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









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



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