Sick plants-----Stumped Grower????

Tuff to say, everything sounds good. Have you checked the ph of the runoff from the sick ones and compared it to the healthy ones?
it kinda looks like over watering to me but its hard to say. Check the smell of the run off maybe, possibly root rot? You make sure to check for bugs and eggs really good? I dont think i can help you on this one but good luck man.

I don't see any fans circulating the air.

Originally Posted by Big leave

Hello every, and thanks advance!

so i am having some problems with just some of my flowering plants. 4 out of 10.

i am fairly new to growing,

i have 12x12x10 flower room. 4 1k watt Raptor XXXL lights. the room is painted with the reflective paint to give the best light i can. i have a wall AC unit but it is turned off due to the low temps around here. 30 to 40% perc. humidity. couple of wall fans and no Co2 because the Temp switches will kick on bringing in cool fresh air to regulate the high temps. temps did get low about 15 days ago. they were 55-65 deg. in the dark and 78-80deg in the light. the temps worried me so we installed a heater and more temp switches. now were good, around 78-80 in the day and 68 to 70 @ night.

Plants: all are in soil.
I have 4 plants in training rails with trellis netting and all trimmed and trained with 64 tops. these have been in the 15 gall pots for 4 months. they were beautiful. the rest (6) are in 5 gall pots and have been for 2 months. these are tall lollie popped and topped.

15 days ago i mixed up 25 gall as usually (this was week 2 in flower). all plants were perfect!! but this is when the temps dipped low.

I think my problems started here.
for this many plants in normal temps this would be normal so i fallowed my procedure.
mixed the House and garden nutrients in 25 gall of water. the 4 plants in training rails have lots of drainage. the rest sit in saucers on the floor. watered 10 plants with 25 gall evenly. i would water when plants are light and soil is dry.
the six non-trained plants would sit in water for a few hours after then it would be absorbed by the soil. the 4 would drain all excess immediately.

i then checked in 2 days later and the 4 plants looked sad and droopy. soil was dry and ready for water but i was concerned so i cut back on how much i soaked these ones. about 1.5 literes ea.


2 days later they looked worse, more droopy and leaves were pointing down...... all the others were perfect and Ragging. already had fist sized colas @ week 3 in flower. but the sickies have penny sized nuggs...

i waited to water the (4) Ill plants for 6 days till the soil was very light. i was trying to avoid root rot. now theres some yellowing going on with the big leaves. no more nugg growth. again all others are beautiful.
i watered 1.5 liters of water with nutes to the sick plants and i have seen nothing but deterioration.



i dont know whats going on... these 4 are not looking good. last harvest (same procedure) each plant made 1.6 lbs avg per plant. i dont think i will see half that ....


i was thinking hydrogen peroxide??? re pot??? did the cold temps piss them off???


here are some pics, not very good though. theres more yellowing than the cam would get as i used the flash in the dark.

any input would be much appreciated!
thanks


photo.JPGphoto 4.JPGphoto 3.JPGphoto 2.JPG

You never mentioned a thing about your PH. Soil varies. So... are you used to the soil and amendments you are using? Checking the water? Runoff?

Originally Posted by Ninjabowler

Tuff to say, everything sounds good. Have you checked the ph of the runoff from the sick ones and compared it to the healthy ones?
it kinda looks like over watering to me but its hard to say. Check the smell of the run off maybe, possibly root rot? You make sure to check for bugs and eggs really good? I dont think i can help you on this one but good luck man.

I would say this guy is onto something. Props Ninja.

Nevermind kron diffrent thread said 5.8...not sure what he's running

thinking PH, watering issue, or maybe even over fertilized?? leafs are pretty dark green.

We will need PH information before a diagnosis can be made...still too many variables to pin point the problem

p.h all day. just look how over shinny the leaves are, thats the first sign of p.h imbalance. It will almost look waxy and confirm this by checking to see if the leaves have become thinner.

Also watch out on how you are leaching your pots. Its not the best idea to let the pots reabsorb the water that has leached into the saucer. THis forces the plant to uptake excess salts which will lead to a low p.H and yellowing.