Jump to content





Posted Image

PCS & Stuart M. Grant - Cichlid Preservation Fund - Details here


Photo

Co2 Project. Do You Think It Will Work??????????

co2

  • Please log in to reply
13 replies to this topic

#1 Michael the fish fanatic

Michael the fish fanatic

    Photo Master 2017

  • Forum Member
  • Joined: 29-September 13
  • Location: Gwelup

Posted 03 May 2014 - 01:05 PM

hey guys i had this idea of filling up plastic bottles with co2 from a diy co2 system, then attaching airline/co2 tubing from the top of a co2 filled bottle to a 'magnetic co2 solenoid valve' (link = http://www.ebay.com.au/itm/CO2-magnetic-Valve-Solenoid-Valve-Night-Time-Cut-Off-for-Fish-Tank-Aquarium-/371050521301?pt=AU_Pet_Supplies&hash=item566455a2d5&_uhb=1)  so that i can control when the co2 goes into my tank. do you think this would work???? 

Attached Files



#2 Niz

Niz
  • Forum Member
  • Joined: 02-April 11
  • Location: Wattle Grove

Posted 03 May 2014 - 01:38 PM

I don't think there will be enough pressure in your plastic co2 bottles for this to work.

 

You will need some way of forcing the co2 out, like having a breather hole in the co2 bottle and attaching the outlet tube into a venturi.


Edited by Niz, 03 May 2014 - 01:39 PM.


#3 malawiman85

malawiman85
  • Forum Member
  • Joined: 11-December 08
  • Location: Geraldton

Posted 03 May 2014 - 07:29 PM

I reckon it would but I havent given it a go. As far as I can tell no real pressure is needed to pass through the valve when on/open. Whats the go when its off/closed? How is the pressure relieved from the bottle?

#4 rsevs3

rsevs3
  • Forum Member
  • Joined: 04-January 14
  • Location: Mount Richon

Posted 03 May 2014 - 07:49 PM

The pressure would be needed to get to any depth in the water? I would be looking at a venturi myself as well. Not that I know anything about co2, my experience is more from an oxygenation POV.

Sent from my GT-I9300 using Tapatalk

#5 malawiman85

malawiman85
  • Forum Member
  • Joined: 11-December 08
  • Location: Geraldton

Posted 03 May 2014 - 07:54 PM

Home made co2 generates co2 for about 2 weeks, pressure for dispersal isnt usually a problem.

#6 rsevs3

rsevs3
  • Forum Member
  • Joined: 04-January 14
  • Location: Mount Richon

Posted 04 May 2014 - 02:38 AM

How much pressure would you usually get mm85?

Sent from my GT-I9300 using Tapatalk

#7 Labcat

Labcat
  • Forum Member
  • Joined: 20-July 12
  • Location: Victoria Park

Posted 04 May 2014 - 08:34 AM

Sounds like a good idea. But as MM85 says, you can't just turn off the CO2 without venting the pressure somewhere else.

My solution is to vent the CO2 into another bottle which displaces water into a third bottle for storage. The overnight CO2 can then be used the next day.

Attached File  20140504_081720_resized.jpg   94.17KB   3 downloads

Took a bit of trial and error to get it right, but it works fine now. I couldn't be fussed with a solenoid, so it's just an alarm set on my phone each morning and evening to remind me to switch it

Edited by Labcat, 04 May 2014 - 08:41 AM.


#8 malawiman85

malawiman85
  • Forum Member
  • Joined: 11-December 08
  • Location: Geraldton

Posted 04 May 2014 - 09:05 AM

Rsevs3 - Hard to quantify being so Low tech. That and i havent done it in ages.
Nice work lab cat

#9 rsevs3

rsevs3
  • Forum Member
  • Joined: 04-January 14
  • Location: Mount Richon

Posted 04 May 2014 - 09:29 AM

I wonder if you could use a bladder in the system that Labcat has made. Kind of like how the pump bladders work for people who use water tanks for their house. Kind of like this:

 

1529s.jpg

 

Although I suppose that this is starting to defeat the point of having the low tech system...



#10 rsevs3

rsevs3
  • Forum Member
  • Joined: 04-January 14
  • Location: Mount Richon

Posted 04 May 2014 - 01:30 PM

@Michael this link might be of interest to you, if you have not seen it already.

 

http://www.qsl.net/w...ria/diyco2.html



#11 BristledOne

BristledOne
  • Forum Member
  • Joined: 04-November 13
  • Location: Beechboro

Posted 05 May 2014 - 02:22 PM

Even though I've done some DIY CO2 stuff before that was a good read rsevs3, thanks.

Michael, one thing I was wondering is are you planning on using yeast or citric acid for your CO2 setup? Yeast is the most common way, but keeps producing day or night so a solenoid is a quick way to create a "Yeast bomb" where the pressure will build and reach a point where either the cap blows off, tubing gets blown off or the worst possibility is the whole bottle ruptures and sprays your room with yeast, sugar and the alcohol by-product.

Any time I've done it I tend to just vent CO2 at night, but I do like the sound of labcats idea as a way of still capturing the CO2 but not causing a pressure buildup



#12 rsevs3

rsevs3
  • Forum Member
  • Joined: 04-January 14
  • Location: Mount Richon

Posted 05 May 2014 - 02:58 PM

The other advantage is that the byproduct from the yeast can be utilized else where.



#13 Michael the fish fanatic

Michael the fish fanatic

    Photo Master 2017

  • Forum Member
  • Joined: 29-September 13
  • Location: Gwelup

Posted 05 May 2014 - 06:05 PM

BristledOne- No what I was going to do is use a diy co2 producer to fill up bottles with co2 and attach the co2 storage bottles to a solenoid valve to control when it's on and off

#14 malawiman85

malawiman85
  • Forum Member
  • Joined: 11-December 08
  • Location: Geraldton

Posted 05 May 2014 - 07:36 PM

I dont get it.





Also tagged with one or more of these keywords: co2

2 user(s) are reading this topic

0 members, 2 guests, 0 anonymous users