Re: [APD] Wicked man

[urville <urville at peoplepc_com>]

You know in my tank the bubble has to come out a be pretty darn small to begin with and it will still travel from the right back corner across the tank down the left wall and across almost the entire tank again before it will disappear. and thats if i dont lose it first

thats how i stayed at 30ppm. once not long ago i put the bubbles into the intake on my fluval and oh my did i ever get lots of little bubbles, but then i also had a ppm of 79 some and lost a fish.

you know i have this diy project saved called undergravel jets. you build these pvc plumbing under the substrate and it comes out in a few jets around the tank, and they guy said he never had a mulm problem nor any to suck, but if you sprayed the tiny bubbles into the jet plumping it would push them right across your plants. this may be the answer i am looking for because then they would go straight up and i wouldnt have a scary ppm

ian
-----Original Message-----
From: Jerry Baker <jerry at bakerweb_biz>
Sent: Sep 23, 2005 12:40 PM
To: aquatic plants digest <aquatic-plants at actwin_com>
Subject: Re: [APD] Wicked man

Thomas Barr wrote:
> Recall, 100% CO2 vs the 0.038% in air. 

I'm not convinced that bubbles that have persisted long enough to travel 
around the tank contain any significant amount of CO2. CO2 is so highly 
soluble that you can watch bubbles shrink as they rise. That putting it 
in front of a spray bar suddenly allows the bubbles to last long enough 
to travel around the tank and come to rest on the leaves of plants - and 
stay there at that - doesn't seem intuitive to me. When I get this new 
tank set up I will try finding a source of 100% laboratory grade CO2 to 
test this theory.

-- 
Jerry Baker
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