rodi question

[fiorano]

i just set up a kent maxxis rodi unit and was wondering if its normal for some water to still come out of the waste water line for a minute or so after you turn the water to the unit off. it slowly trickles to a stop for around a minute. and also the instructions say that when it is not in use you have to keep the waste hose and the water product hose above the unit but i already set my waste hose into a drain and was wondering if it is ok to just have a small section of the waste hose a few inches above the unit to stop drainage and if you guys think that is sufficient enough?