Re: Light on an off

To: Aquatic-Plants at actwin_com
Subject: Re: Light on an off
From: Stephen.Pushak at saudan_HAC.COM
Date: Tue, 2 Jan 96 15:00:26 PST
In-Reply-To: <199601022039.PAA03778 at looney_actwin.com>; from "Aquatic-Plants-Owner at actwin_com" at Jan 02, 96 3:39 pm
Mailer: Elm [revision: 70.85]

> From: George Booth <booth at hpmtlgb1_lvld.hp.com>
> > From: u7211aa at sunmail_lrz-muenchen.de (Michael Irlbeck)
> > 
> > > - light on for 4 hours
> > > - light off for 2-4 hours (2 hrs. seems to be too little..)
> > > - light on for 6-8 hours
> > >Total:10-12 hours of light within a period of 12-16 hours.
> > 
> > Has anybody tried this strategy against thread algae?
> 
> It didn't seem to affect any of our algae but we found it an effective
> cure for Rotala macrandra and other high light plants, i.e., we lost
> some very robust groves of these plants by messing with the light
> cycle.  

Likewise the 4 days of darkness did little to eliminate green algae
bloom (or any other algaes). It did cause almost all of the Hydrocotyle 
leucocephala leaves to turn white after the treatment. New leaves appear 
to be ok.