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Light Reflectors and Earthworm Castings
Subject: light reflectors
Tom,
> In the last week there was a question of the value of the aquari
> flourescent tube external reflectors. Since I am setting up a l
> system for a 45, I was in the hardware store looking for stuff t
> weekend. I have two ideas for a reflecting backing.
>
> - white vinyl flooring. cheap, waterproof, easily installed
>
> - tin foil. even cheaper, but not very structural, difficult to
From what I have been told by lighting experts, foil is less
reflective than a plain white glossy surface becase it scatters
the light. Polished metal reflectors don't scatter light the way
foil does.
Subject: Re: earthworm castings
Stephen Pushak asks:
> Karen, are Crypts generally lovers of rich, muddy substrates >
too?
From what I've been told by collectors, they are extremely
variable. The same species can be found in mud or in a rocky
stream bed. But I think _generally_ they prefer a richer
substrate, particularly in the aquarium.
Karen Randall
Aquatic Gardeners Assoc.
Boston, MA