Leaking CO2 good for anything?

[JLW]

So, I've had my CO2 unit up and running now for a month or so. I know that I'm losing small amounts of CO2 through using regular airline tubing, from some of my connexions not being perfect, and especially where the CO2 bubbles make it to the surface.

Has anyone ever experimented with growing terrestrial plants around the aquarium to make use of this extra CO2? Is it likely to even be remotely useful?

For that matter, though I haven't seen any difference yet, when I syphon the aquarium into my plants outside, does the excess CO2 in that water do anything for those plants?

[takadi]

For some special *cough* operations in greenhouses like hydroponics, they definitely use Co2 supplementation. In fact when I first ordered some CO2 tubing, I made the mistake of ordering from a hydroponics store that punctured small holes through it. As for CO2 water, I don't think terrestrial plants absorb Co2 through their roots, only through their stoma.

[JLW]

I'm thinking that maybe the CO2, soaked into the soil, will slowly bubble up and help the plant? I don't know that this is anywhere near significant enough to make a difference. It's already at 390 ppm, so adding a few bubbles doesn't seem like much, but ... maybe it could effect the local concentration enough to give some of my orchids a bit of a boost. Before I move and set up lights and such, I'm hoping someone might know.