Need help, leaves curling under badly

S

stonerjoe

New Member
This is my first grow and I am now on day 35. I am growing in a 4 x 4 growroom with excellent ventilation, both intake and exhaust. I have transplanted from peat pots, to 1 gallons, to 3 gallon bags, and finally last week to 5 gallon bags. I use Promix soil with 25% perlite as my medium. At week three I started using Fox Farms Nutes. To this point I have been using just the Grow Big. My plants(15) are now 5 days into flowering and 3 of the plants are showing very bad leaf curling. I have some pics I will include. I also notice that many plants have yellowing leaves at the bottom. I think this is due to not much light reaching them. I was hoping to sex the plants soon so I wouldn't have so many under the 400 watt HPS. I flushed the one plant and redid the nutes using 2 tablespoons of Grow Big, but I am not sure now if that was the right thing to do. What do you think my problem is and what should I do about it?

I also notice that the leaves are really green, especially the ones that are curling the worst. I now notice that 4 of the plants are having this problem. Should I try to foliage feed the plants with nute water? I heard that could help if my nutrients are being locked out. I tested the PH of the runoff and it looks like it is in the range of 6.0 - 6.5. Is this too low? I am getting a better electronic tester on Fri so I will be able to get completely accurate results then, but now I have a manual tester and the water looks like it is light yellow with a touch of green, but not too much green. I also ordered a PPM meter which I hope will come any day now. What levels am I looking to obtain with the PPM meter? 400 -500?

number1.jpg

number2.jpg

number3.jpg


And here is a pic of my growroom

number4.jpg
 
It appears u have latent nutrient salt build up. U can just flush them all (not at once, ur humdity will be high as hell). Give this a read>Standard Nutrient Flushing Clearing Formula. Also check this out>Plant Abuse Chart. More help is on the way. Did u flush b4 going to flower? i feel this is necessary because ur changing the feed regimen. So u I feel its best to clear the veg nutes from the medium and replace with a transitional mix or a light flowering mix. Hope this helps some. More help is on the way shortly.
 
BWC BayArea said:
It appears u have latent nutrient salt build up. U can just flush them all (not at once, ur humdity will be high as hell). Give this a read>Standard Nutrient Flushing Clearing Formula. Also check this out>Plant Abuse Chart. More help is on the way. Did u flush b4 going to flower? i feel this is necessary because ur changing the feed regimen. So u I feel its best to clear the veg nutes from the medium and replace with a transitional mix or a light flowering mix. Hope this helps some. More help is on the way shortly.
Click to expand...

I transplanted right before flowering, but did not flush. I transplanted from the 3 gallon to the 5 gallon once my soil went dry. Oh, one thing I didn't mention, I flooded my basement on Saturday accidentally which caused my humidity to spike for a few days. Could this cause something like this? No that I have dried it all out it is back to normal, about 50%. I didn't realize people changed mediums for flowering, so I used my same promix/perlite mixture. I have 15 plants so it is a huge job to change, so I don't think I can do that now. Is it absolutely necessary, or do some of you use the same medium for both veg and flowering??? I will flush another tomorrow. Should I use the Flowering nutes after flushing? Thanks for your help!
 
:peace:Man I didnt flush before going to Flower, Im only 5days into 12/12 so should I just go with it or should I FLUSH ? I Have no problems or yellow leaves..:nicethread:
 
Its ok to flush. The only time I think its to0 late to flush is when the plant is dead. Ur runoff PH seems to be in range but we'll see when ur new meter comes. Don't 4get u'll need reference solution to calibrate ur new meter. Ur PPMs should at least somewhat follow what the manufacturer/distributor suggest. That or a fraction of based upon ur goals and plants needs/tolerance. What are ur day and night room temps?
 
BWC BayArea said:
Its ok to flush. The only time I think its to0 late to flush is when the plant is dead. Ur runoff PH seems to be in range but we'll see when ur new meter comes. Don't 4get u'll need reference solution to calibrate ur new meter. Ur PPMs should at least somewhat follow what the manufacturer/distributor suggest. That or a fraction of based upon ur goals and plants needs/tolerance. What are ur day and night room temps?
Click to expand...

My day and night temps are 75F during the day and at night when lights are off about 67F although at times it has dropped down to 57F, just not lately since it has been warm the past few days. I just installed a space heater in the room and keep it at 60F so the temps will no longer go below that. Is that about right? I don't want it running too much since it blows on one of the plants and I worry it will be too much heat.
 
BWC BayArea said:
Try and get ur temps between 65-75F. RH 40%-60% range
Click to expand...

I turned on my heater last night and had it set at 65, but the damn thing didn't shut off until it reached 80 degrees. My humidity is also very high at night, up to 80% still, so I am trying to wait to flush any more until it drops. Will the plants be ok like this for a couple days?
 
Flush around time lights come on. If humidity is that bad, U may need better ventilation. Its normal for humidity to spike in cooler temps this is why u experience high humidity at night. I use my heater to help battle humidity at night sometimes. U also don't want it to get hot in the daytime and chili at night. Try to keep temps within 10-15 degrees of each other if at all possible. The longer u wait to flush, the worse the problem gets.
 
BWC BayArea said:
Flush around time lights come on. If humidity is that bad, U may need better ventilation. Its normal for humidity to spike in cooler temps this is why u experience high humidity at night. I use my heater to help battle humidity at night sometimes. U also don't want it to get hot in the daytime and chili at night. Try to keep temps within 10-15 degrees of each other if at all possible. The longer u wait to flush, the worse the problem gets.
Click to expand...

I just don't see how I am going to flush my 5 gallon bags considering I read I need to run 5x the size. That would be 25 gallons and I have nowhere to put the water. Also, like I said when I check the PH of these bad plants it looks fine, somewhere between 6.5 and 6.8, so why would I need to flush. I guess I am just confused, especially since I have not overfed the plants. I started out using 1/4 the nutes and have only recently upped it to 1/2 strength. Anyway, if I do flush should I re-nute with flowering nutes once flushed? Otherwise they will be getting no food. Also, do they need to have flowering nutes to flower? My plants are 6 days into 12/12 and not showing any signs yet.
 
stonerjoe said:
I just don't see how I am going to flush my 5 gallon bags considering I read I need to run 5x the size. That would be 25 gallons and I have nowhere to put the water. Also, like I said when I check the PH of these bad plants it looks fine, somewhere between 6.5 and 6.8, so why would I need to flush. I guess I am just confused, especially since I have not overfed the plants. I started out using 1/4 the nutes and have only recently upped it to 1/2 strength. Anyway, if I do flush should I re-nute with flowering nutes once flushed? Otherwise they will be getting no food. Also, do they need to have flowering nutes to flower? My plants are 6 days into 12/12 and not showing any signs yet.
Click to expand...
I don't know who told you 5X's the volume when the rule of thumb has been 3X's the volume for as long as I can remember. Plants release waste back into the soil. This waste is best flushed out. A person should flush a minimum of once when growing to clear the soil of this waste. i'd say at a very minimum a person should flush right before going 12/12. this is also when I do my transplanting to my final container size. Your final flush should contain a 1/2 strength dosage of nutrient. And six days is not enough time for sex/pistals to show. I've seen it take as long as 3 weeks.
 
stonerjoe said:
I just don't see how I am going to flush my 5 gallon bags considering I read I need to run 5x the size. That would be 25 gallons and I have nowhere to put the water.
Click to expand...

If you don't have a way to handle the large amount of water when flushing, you can always go to home depot and buy a five gallon bucket and a plastic crate, those little crates that are shaped like a top less box and the walls are weived plastic. You place the crate over the opening of the 5 gallon bucket and sit your pot on top of the crate. The crate will suspend your pot over the bucket while the water drips into the bucket, do this 5 gallons at a time and you will be fine. I forgot what thread I got this from, just don't want to take the credit for it.
 
Racefan said:
. Plants release waste back into the soil. This waste is best flushed out. A person should flush a minimum of once when growing to clear the soil of this waste.
Click to expand...


Think of it like this...After YOU eat a BIG meal you need something to wash it down with....If you dont drink water you will dehydrate..

You are feeding and feeding your plants with no drink of water to help wash it all down...Or like racefan said...They are re-feeding on their own waste, and you are adding more food on top of that..Gross

You should be watering in-between feeding..Just plain RO H2o (PH neutral), NO NUTES

Feed wait till the soil is dry, then give them just water, wait till the soil is dry then Feed again..And so on.

But since you havent watered with plain water yet...i would flush them to clear out the build up/waste...

Im not as technical as Racefan when explaining...But i hope that helps...Takes a while to absorb all this information...keep reading like crazy :surf:and you will find ONE DAY it will all start to make senses...Or just Live n Learn like me..

GOOD LUCK!!! :yummy:
 
Thanks. I think the reason I get confused is because of advice I get that contradicts other advise. For example, a sticky in the FAQ section (Nutes - What To Use & How To Use Them - Tutorial says you should follow their nute schedule for Fox Farms nutes, but it has you feeding every feeding, and not just that, a large amount.

I never fed my plants full strength nutes. Another thing, I noticed today that some of the plants that had this problem are now getting better. New growth does not have the curled leaves. I am wondering if my water mishap is part of the problem since the room was flooded and the plants seem to take forever to dry out. I watered them a week ago and they still don't need to be watered. But I will be watering them with straight water tomorrow or Sunday when they need to be water. I hope that helps. I did flush one of them today and one the other day.

I probably will continue doing one a day until I get to all five. I don't want to raise the humidity levels back up too high. I just wish I could solve my cold night issue before it gets colder here. I have a fan heater, but when I set it to keep the temps above 65 it stays on until the room gets up to 85 - 90 degrees which seems high. Is it better to get that hot, or let the temps drop below 65?
 
Im a noob at all this but I have recently started using fox farm nutes. Doesnt the feeding schedule call for 2 teaspoons and not 2 table spoons? I started with big bloom and big bloom/grow big. Some of my leaves seem to have the same problem. Ive read something about having "claw leaves" and is said to be a result in too much N. Im gonna try flushing and see what happens.
 
You are absolutely right, I have been screwing up the schedule for weeks. Dammit. I can't believe I didn't see I was supposed to be giving Big bloom along with the grow big. And you are right, it is teaspoons. I must have read it wrong. No wonder my plants did what they did. My bad. Well live and learn, I hope I still get some results from them. I will now get them back on schedule after flushing out.
 
Back
Top Bottom