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Re: Substrate Cable Observation

Tom Wood wrote:
"Is it reasonable to assume that since the heater cables caused
this "stuff" to come -out- of the substrate, then the cables are working to
pull things -into- the substrate?"

Maybe, but how reasonable is it to blame the cables for the appearance of
the material on the water's surface? It _could_ only be a coincidence that
it appeared after the cables were turned on again.

You also noted that "After I cleaned the sieve for the overflow, the sheen
is gone..."

It is quite possible (and highly likely) that the surface scum was caused
(or at least made more prominent) by the clogged surface skimmer and has
nothing to do with the presence or absence of substrate cables.

James Purchase