nitinvaibhav3 years ago • purchased this product000IneffectiveThese cassettes don't soak up water as a sponge would. They only get wet a little over water level. That leads to the humidifier being ineffective in raising humidity levels beyond 40%ContraDon't soakup water The Community terms and conditions applyHow do ratings work?iMore information about: How are ratings submitted?SubmitCancel