I had a similar issue. My tank featured 2 huge driftwood caves which the fish use for cover and setup homes. Biggest issue is they became very flighty and dashed for cover ever time I walked into the room. What i did was remove the driftwood and bought some new pieces that come down into the tank like roots. This adds some character to the tank, looks natural and also maintains large swimming space. I found immediately the fishes behavior changed and they swim around happily without dashing for cover. They also seem more confidant. So instead of going completely bare maybe try this?
Hope it helps.
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Hope it helps.
Sent from my iPhone using MonsterAquariaNetwork app