My experience echos Alan's in that my bastimentos use the foliage and upper reaches of the viv quite a bit....I have them in a 25 gallon high. This is in contrast to a morph like Man Creek where it is not uncommon to find them rumbling down at substrate level. I personally think that the best compromise with pumilio is to provide them with both floor space and climbing room and let them chose what they prefer at any given time.
Bill
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