Is anyone currently using a substrate heater? I've read some interesting
articles on them, and I'm considering using one on my next big project.
What are the advantages and disadvantages?
Another question I have is on the substrate itself. At what point does a
person need to worry about messing with the substrate (vacuuming, stirring,
etc.). I've had my tank for about a year now and haven't really done much
with the Flourite substrate. I do, however, vacuum the gravel, but only the
very top debris.
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