Another case of drooping plants, please help

Yesterday my plants looked healthy, but when I went to see them today 2 of them where drooping and the top leaves were turning yellow...

I'm running a ebb'n'flood... today the ph was at 6.2, dropped it to 5.8.

I was feeding them once every 3 hours, maybe that was the problem? Changed that to once every 4 hours.

Can someone help me out, please?

what sort of light do they get?

Hmmmm....I don't know man...but something is off...something that can't be caused by your lights...they look either super over or underwatered...so is it possible they could be over or under watered?

And what do what kind of lights have to do with this kind of issue anyway?

and ph should be 5.6-5.8 for hydo. And yea as stated above what kind of lights and look under or overwatered i can only agree what kind of hydro system do u have going maybe u have to water running to long causing this maybe. little more info about your set up?

missnu said:

Hmmmm....I don't know man...but something is off...something that can't be caused by your lights...they look either super over or underwatered...so is it possible they could be over or under watered?

Click to expand...

i agree with him...it looks a lot like mine did when i over watered them.

I was watering them for 15mins every 3 hours, since I've found them this way changed to 4 hours.
The ph is now at 5.8...
They are under a 400hps, average temperature is 26ºC (78.8F), RH was at 45%

*update*

this morning when I went to see them, they we're even worse :s
in one the leaves are drying up and breaking with a simple touch...

took them out of the table, in case of over watering...

what else can I do?

ppms were at ~870 (I'm using Lucas Formula)

*bump*

Is there any hope for my little girls?
It just remembered that they started showing some symptoms after I covered the hydroton with that white vinyl, could this have anything to do with their current condition?

What can I do?

What temps is your res kept at?

Looks like there drowning my friend

Don't know that, I was going to buy an heater for res this week :s

These 2 are LSD (Barney's Farm) , but I also have there a Papaya (Nirvana) and a Top 69 (Advanced Seeds)...and those are doing OK.
The 2 LSD's were until 2 days ago the ones that were looking healthier

You need to know the temps of your res my friend. Temps that are out will cause you all sorts of problems this being one of them.

Were is your res kept out side the grow room?

It's inside

In my flood and drain system I go 1/6th of what the fert instructions say for dirt per gallon. This works out to three 15min start to finish F&D's per 24hr. Start draining at the time that the bed will be empty 15 minutes from the start.

I flood same as you do feel my anger. every 3 hours but i time the flood so as soon as its at the top of the pot it stops and starts to drain again this usually requires the pump to run for about 5 - 10 mins depending on how many liters per hour it moves.

I believe temps to be your problem with your res temps you can get a thermo for £3 from the fish shop dude at least you will know if this is the problem. heathers are a score

If there is water pooled that keeps the roots in water all the time this can cause this problem also. Make sure water can't pool under your plant. The plantpot has to completely drain.

soil is better for beginners, they might really bounce back if you transplant to soil, then you could check the roots. They are drying up from being too far from the light, too close (400 hps is a lot for small plants) but it almost looked like root rot, the plant is diseased and getting worse.
humidity is the only other thing, are you never misting them with water, or all the time? if you transplant, look for brown dead roots and tear them off. best bet to transplant to dry potting soil, let it dry out, prune off dead material, maybe water the next day. switch to hand watering, you won't over water then

My water pump has a little "switch" to choose the water flow (just a little thing saying MIN on one side and MAX on the other), I'll need to set that in a way that'll take 15mins for the water to get to my drain?
Is that what you guys are trying to say?