Lower Diffusion Rates At Night...

[Squid]

As the title says.. how do people lower the amount of Co2 injected where something like a nutrafin kit solution is being used... ( i may have asked this in another of my threads... but christmas has fried my brain, and i can't remember or find it... hehehe)

Also..

Has anybody used this Red Sea TURBO CO2 Bio System?

Cheers
Squid

 

[Themuleous]

For yeast type kits, either remove the tubing manually from the yeast reaction chamber, or if you are ultra lazy like me, set an air pump to run during the night, that will drive off the CO2 and lower it. Stop the pump 1 to 2 hrs before lights on to give it a chance to get back up to the right level.

Not used the red sea system, but its basically the same, although its more expensive than the nutrafin kit to get refills and not sure if you can use a DIY yeast mix in it or not. BTW that link doesn't work

Sam

 

[Squid]

For yeast type kits, either remove the tubing manually from the yeast reaction chamber, or if you are ultra lazy like me, set an air pump to run during the night, that will drive off the CO2 and lower it. Stop the pump 1 to 2 hrs before lights on to give it a chance to get back up to the right leave.

Not used the red sea system, but its basically the same, although its more expensive than the nutrafin kit to get refills and not sure if you can use a DIY yeast mix in it or not. BTW that link doesn't work

Sam

Cheers fella... and yes i am ultra lazy..!

BTW.. link works now ;-).. thanks for that too!

Squid

 

[Underwurlde]

You can control the output of Nutrafin / DIY CO2 type kits using something called a Venturi Reactor. All the bits to make one will cost about £25 from Pets At Home. Probably a lot cheaper if parts sourced elsewhere.

The idea is that a low flow rate (500L / hr) power head outlet is connected to a vac tube and a downward spiraling water motion is set up in the vac tube from the power head. CO2 from the kit then bubbles up through this motion, i.e. the end of the CO2 outlet is placed inside and at the bottom of the modifed vac tube. A smaller tube placed about 50mm down from the top of the vac tube feeds back into the power head inlet. The idea is that the lower pressure at the inlet sucks any residual CO2 into the inlet stream & therefore completely mists it into the water hugely increasing the efficiency of CO2 absorbstion.

Now the beauty of this (and the reason I mention it) is that when the powerhead is off, CO2 is effectively off (although still bubbling away - it now escapes through a 'burp hole'), hence (if you wish) you therefore connect the Venturi powerhead to your timed lighting mains outlet.

I have just made one myself - took an hour or so, plus a couple of days for the silicon to completely cure. I will then try it out comparing the before and after CO2 levels.

Andy

 

[Squid]

You can control the output of Nutrafin / DIY CO2 type kits using something called a Venturi Reactor. All the bits to make one will cost about £25 from Pets At Home. Probably a lot cheaper if parts sourced elsewhere.

The idea is that a low flow rate (500L / hr) power head outlet is connected to a vac tube and a downward spiraling water motion is set up in the vac tube from the power head. CO2 from the kit then bubbles up through this motion, i.e. the end of the CO2 outlet is placed inside and at the bottom of the modifed vac tube. A smaller tube placed about 50mm down from the top of the vac tube feeds back into the power head inlet. The idea is that the lower pressure at the inlet sucks any residual CO2 into the inlet stream & therefore completely mists it into the water hugely increasing the efficiency of CO2 absorbstion.

Now the beauty of this (and the reason I mention it) is that when the powerhead is off, CO2 is effectively off (although still bubbling away - it now escapes through a 'burp hole'), hence (if you wish) you therefore connect the Venturi powerhead to your timed lighting mains outlet.

I have just made one myself - took an hour or so, plus a couple of days for the silicon to completely cure. I will then try it out comparing the before and after CO2 levels.

Andy

Thanks.. please let me know how you get on..

Squid

 

[rockerBOO]

For another example of a Forced Reactor, see the bottom of this article http/www.qsl.net/w2wdx/aquaria/diyco2.html Looking to do this for myself.