Re: [APD] hydrogen sulfide - thanks

["S. Hieber" <shieber at yahoo_com>]

It was unclear to me whether the plate was over or under
the tank. Guess I read too quickly.

If he is applying the heat from below the aquarium's bottom
panel, and using a plate to distribute the heat, then I
wouldn't expect the heater to generate convection currents
through the substrate. I'd expect the heat to be relatively
evenly applied.

sh



--- Stuart Halliday <stuart at stuarthalliday_com> wrote:

> S. Hieber wrote:
> > You have my curiousity sparked.
> > 
> > So this is running AC at 60 volts? Why all the
> resistors?
> 
> The resistors are the heating element.
> 
> 
> > To reduce the voltage across the across the substart
> cable
> > termina, I suppose. Why not let the substrate cable be
> the
> > only significant resistance. Those external resistors
> are
> > converting electrical energy to heat and then dumping
> it
> > outside the tank. 
> 
> Yes, if I understand Mariano correctly the resistors heat
> up the
> granite slab and gently heat the underside of the
> aquarium. Very neat.
> 
> So it isn't in the tank...
> 
> -- 
> Stuart Halliday
> _______________________________________________
> Aquatic-Plants mailing list
> Aquatic-Plants at actwin_com
> http://www.actwin.com/mailman/listinfo/aquatic-plants
> 


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