Arnold, What would you find to be suffecient for seedlings, should I switch to a 16 hours on 8 hours off? Thanks for the advice :) Josh ________________________________ From: "arnold140@verizon.net" <arnold140@verizon.net> To: pbs@lists.ibiblio.org Sent: Sun, November 7, 2010 2:00:30 PM Subject: Re: [pbs] All My Hippeastrum Seedlings Were Devoured! Josh: Two things that come to mind with 24 hour light are: The plants are pushed for growth at the expense of developing root and bulb mass. Something like a nursery that pushes fertilizer to get growth at the expense of having a plant with a balanced root to stem ratio. Plants respire or grow at night ( I think ) and use the energy produced during daylight hours to manufacture tissue. Arnold