DIY CO2 System questions

[rvm]

I set up a DIY CO2 system on 2 of my tanks last night, and followed the instructions on this page. I have the bubbles going into my filter intake, but it just seems to create an air gap in my cannister filters that stop them from working!! Am I doing something wrong, or should I just go with an airstone?
I have quite high fish stocks in both tanks, so I have my filters set up to agitate the surface of the water. I know this isn't ideal, but I don't want to alter this. My plants do grow reasonably well, but they go brown very easily, and all I'm trying to do with the CO2 is avoid this a bit.
I have high Ph water (around 8 ) and it is very hard as well (not sure how hard, but well 'ard is a good guess!!!) so I'm not massively concerned about alterations to water chemistry.
What is the best way to solve this?

 

[Silly me]

I have mine on the filters output.. not intake.?

 

[rvm]

but surely that just blows the CO2 bubble to the surface and it doesn't dissolve??

 

[Silly me]

it get blown into a million smaller bubbles that looks like it dissolves.

my CO2 level is about 15-20ppm with 1bubble every 2 sec .. I'm happy

 

[Bangin]

You're supposed to put it in the filter intake, though I've never done it myself.

You must have a lot of CO2 bubbles entering the filter for it to make such noise. You could try a different diffuser method. This page lists a few different options under "Reactors". http/www.thekrib.com/Plants/CO2/

 

[rvm]

yup, it's giving me 8 bubbles every 10 seconds. Does that mean I used too much yeast? I used the 1/2 teaspoon and 2 cup of sugar mix as recommended.
I think I'll try trapping the gas in an upturned cup or something like that. See how that goes before I decide to buy anything too expensive to diffuse it well!!!