I have been keeping my 2 neps. in water trays so I can't foreget to water them. From what I heard is that they don't like sitting in water. I have never been good with neps. in the 3 years I have been growing one it has only grown new stem and the old stem looks near death then anything else and the new one is extremly happy. Well I have kept a Nepenthes ventricosa and Nepenthes sanguinea in water with seemingly no ill effects and are now doing great after each of their first summer outside with me. Also how hard is it to grow Nepenthes sanguinea? Sorry if my post may be a little confusing.