Wonder water?

• To: Aquatic-Plants at actwin_com
• Subject: Wonder water?
• From: George Booth <booth at hpmtlgb1_lvld.hp.com>
• Date: Thu, 20 Jun 1996 08:25:58 -0600
• In-Reply-To: Your message of "Thu, 20 Jun 1996 03:39:02 EDT." <199606200739.DAA09873 at looney_actwin.com>

> From: bowkerg at NTU_EDU.AU (Gail Bowker)
> Date: Thu, 20 Jun 1996 10:16:11 +0930
> 
> >One way to tell if this is photosynthesis or just trapped gas escaping
> >is to change water with the lights off.  No light, no photosynthesis!
> 
> But, how could you see the bubbles if the lights were out?

It doesn't need to be very dark to stop photosynthesis.  Ambient room
lighting will not support [much, if any] photosynthesis unless, of
course, your ambient room is outdoors.

At the worst, you could sneak up on the tank and snap the lights on
for a few seconds to check for bubbles.  Or, HEY!, use a flashlight. 
Yeah, that's the ticket. 

George

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