How long have you had them?
What's your set up look like, i.e. driftwood, rocks, plants, etc?
What and how often are they eating?
Posting a picture of your tank would help too.
They are most likely going to use the hiding places as long as you have any in the tank,no matter the size or age.I would remove everything except a few plants and they should eventually begin to swim around...They are lurkers in the wild.
will removing all hideouts not stress them out too much though?
im thinking along the lines of to much stress making them more likely to get disease/illness etc
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