Quote Originally Posted by Cyclonite
Your plants are probably fine, try increasing the duration between watering's. Let the roots dry out some and grow in search of water....if they aren't droopy a few hours into your 18 then your water is fine.
This is the best advice for you that I've read here. It's way more important than most people realize.

You should experiment to find out what the optimum water/feeding schedule is for your plants. You will need to watch them carefully for a few days, so you might want to try this on the weekend or something.

Just start reducing the time between waterings. To do this right you should have a cyclestat timer so that you can have infinate control over the duration and the frequency. However if you don't want to spend the $140, Intermac (I think) has a decent digital timer ($20) that has 14 on/off events for one day. This would allow you about 51 1/2 minutes between an off and an on, if you spread it out evenly. For your setup this would probably be fine. I know it's fine for my bubble cloner. You may even be able to have an off time of several hours. The more off time the better. Once or twice each day change the schedule to reduce the on times a little. As you closely watch your plants, keep doing this until you start to see the first signs of stress on the plants or any one plant. From there increase the on time a little and that is your optimum schedule. This is more important than people realize. The more oxygen you can get to the roots the better. It's the key to big, healthy, well-adjusted sisters and mamas. It will also help reduce instances of root rot, mold, etc.

I just harvested a new strain for me and for the life of me I could not stop the leaves from drooping a little during the entire grow. Meanwhile other strains in identical conditions had no droop.

Hope that helps a little. It's just my opinion, based on experience.