If you over fertilized and don't have a soil that's pre-fertilized some support flushing (which is what you're calling leaching). Run water of at least 2 to 3 times the volume of soil through the soil. So if you have 3 gallon of soil run 6 to 9 gallons of water through it. This washes out most or a lot of the salts that are built up from over ferting. I use room temp water to almost luke warm when I do this. Cold water can shock the roots. Or so they say.

I've flushed plants a number of times and haven't seen a negative response. Always a good response. There's a medical grower that flushes 4 or 5 times throughout his grows and I've seen some of his 'work' and it'd blow you away. He just feels it's a good thing to flush the soil a number of times to keep things clean.

My one question would be if you have a moisture meter...how did you over water?? If you have over watered all you can do is try to get a fan on the soil and make sure the drain holes are not covered and get some air moving over it. If the plant is of any size it'll use it up fairly quickly though also. Also some suggest poking holes down through the soil to allow more air to get to it and dry it out, but I've never liked that idea. I would think you'd be poking through a lot of small roots plus I've always heard that it wasn't a good thing to let air hit the roots.

Hope that helps!
Marc Benson Reviewed by Marc Benson on . ARGHHHH, help Hey people, ive just got back to da grow room, bin out for a couple of hours and the leaves have started to droop in6to the soil, got no strengh in them, any ideas? Cheers. Rating: 5