Diy Co2 Question

[xenophilex]

Hi all.

I put together a very simple CO2 system today. It is just a plastic bottle with an airtube stuck through the lid and secured with silicon. The other end of my airtube goes into an off-the-shelf Red Sea reactor I found in my LFS.

It is up an running and I'm getting more bubbles per second than I can count (inside the reactor, not the small bubbles it produces). It is flying.

My question is how people control bubble rate with a crude system? Are there over-pressure concerns if i were to clamp the airtube to restrict flow?

So what should I do to bring my bubbles down to one per second? put a clamp on the airtube? remove the yeast mixture and put less yeast in the next batch? Or will the process slow down in a few hours? (it has only been running for the last 30 minutes)

Thanks for your help,
- JK.

 

[xenophilex]

Well just to update the situation.

The high bubble rate (KH of 3) managed to crash my pH from 7.0 to something just below 6.0. I've obviously pulled the device. The plastic bottle was actually bloated and under pressure. I unscrewed the top and a lot of gas was released. I've now got the open bottle sitting outside.

I'm guessing I put way way too much yeast in my mixture.
I followed the nyberg recipe and put the following into a 4L plastic bottle:
2L H2O
1/2 Cup Sugar
2 tsp protein powder
1 T mollasses
1 tsp baking soda

BUT then I added 3 yeast packets

I'm guessing that one will do just fine?

 

[voo]

I think even 1 packet might be too much, but i'm not sure, Depends how big the packets are

Also how big is your tank?

You could put some crushed coral / coral grit in your filter so that it'll keep the pH at 7.

I dont regulate my CO2, it's part of the problem with using the yeast method, I havent seen anyone regulate it so far.

 

[geezer]

http/www.fishforever.co.uk/carbondioxide.html

this guide will give you a rough indication on how much yeast you should be using