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Vermiculite/soil substrates
I completely agree with Dionigi--the inconvenience and cloudiness
associated with soil/vermiculite substrates has been exaggerated. I
also experienced a bigger debris cloud with a sand only substrate,
versus my soil/vermiculite substrate. I recently had to uproot a HUGE
radicans sword (30"+), and the ensuing "mess" was insignificant. Most
of the roots on this plant were 8-10" long, and some were longer.
I do not understand why laterite (a fine clay soil) is considered to
be "neater" than loam (a clay/silt/sand soil). If you were to mix
equal amounts into the water column, guess which one will settle out
faster. Waterlogged vermiculite isn't even worth mentioning as a
"problem."