Yellowing dying leaves

[ANOMOS]

SOIL:

How long has this problem been going on? 4 days
What STRAIN are you growing?LR2
What was the establishing technique? (seed or clone?)seed
What is the age of your plants?33 days old
How Tall are the plants?about 7"
What PHASE (seedling, vegetative or flower) are the plants in? flowering
What Technique are you using? (SOG, SCROG etc) N/A
What size pots are you using? (Include how many subjects to pot) 6L
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?) FFOF 45% perlite
What Nutrient's are you using?How much of each with how much water? How Often? *Knowing the brand is very helpful* FF Grow Big, Big Bloom (1/4 teaspoon per gallon)
What is the TDS/EC/PPM of your nutrients used?N/A
What is the pH of the "RUN-OFF"? 7.0
What method of pH test was administered? Using Strips? pH pen? Pen, ph is 6.8-7
How often are you watering?every 2-3 days
When was your last feeding and how often are you feeding?3 days ago, every other watering we feed
What size bulb are you using? 250HPS
What is the distance to the canopy? 11"
What is your RH Factor? (Relative Humidity)23-30 % past few weeks
What is the canopy temperature? 83-85
What is the Day/Night Temp? (Include fluctuation range)day 85, night 71
What is the current Air Flow? (cfm etc.) 135 CFM
Is the fan blowing directly at plants? just above them, but they get airflow too
Is the grow substrate constantly wet or moist? no
Is your water HARD or SOFT? soft
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? distilled with 1/4 teaspoon CalMag per gallon
Has plant been recently pruned, cloned or pinched? no
Have any pest chemicals been used? If so what and when? no
Are plant's infected with pest's? no

so last sunday(day 25) i overwatered one of them, the one with more yellow on it, it was droppy for a few days but then came back to life. but that day i watered with FF Big Bloom, thinking that was the first one to feed, instead of Grow Big, and they didnt get GB till day 31, so i think this problem is a P Def, im not 100% its just this, but it did start from the bottom with whole yellow leaves. I also cut off four leaves/stems off the more yellow one and two off the other one of the first set of true leaves and the straight ones that come out first. they were yellowish brown and crumbly and one looked like it had mold on it, so i hope i did the right thing, but here they are with more yellow. if anyone could give any insight i would be very happy.

 

[Weedninja]

That's an N deficiency, bro. The GB ought to be kicking in soon, but don't expect the yellow leaves to turn green. The problem should stop getting worse though.

 

[ANOMOS]

That's an N deficiency, bro. The GB ought to be kicking in soon, but don't expect the yellow leaves to turn green. The problem should stop getting worse though.

I was typing fast, but thats what i ment a N def, not a P, my bad.

yeah i know the yellowing ones are gonners, it takes about 4-5 days for GB to affect it right? hopefully it stops getting worse, when i came home tonight they dont look so hot, more yellow, and just no vigor in those leaves

 

[Weedninja]

I don't know the exact timetable, but N is usually available to plants within a week of applying it. If you leave the leaves on until the N kicks in, the plants can pull some nutrition from them.

 

[biotek]

what wrong

what wrong

well this is just a gues but what is the humidity % I am expeierncing this and my % was at 85 way to high a week with the dehumidifier and the problem seem to straitin out. also I hit it with green up high in nitro and pick all the dead yellow leaves also epson salts help as welll.
good luck
bio

 

[THRIPS AHOY!]

Or u need to water yer plants.

 

[ANOMOS]

RH goes from low 20%s to about 30%

i just watered them last night, and this morning they are still declining, more droopy leaves

 

[TanzanianMagic]

The soggy (mouldy) tip of the one leaf makes me think of a combination of lack of fresh air and overwatering.

Now overwatering could be a function of the plant locking out both nutrients and water, because of a poor ph or overfertilizing, and you subsequently watering/feeding before the soil was well dried out. Or the soil texture could be not loose enough for proper root penetration.

To know for sure, you should take the plant out of it's pot and check if you see any dying or rotting roots.

To help prevent overwatering, makes sure you have some filler at the bottom of the pot, like grow rocks or perlite and make sure they more than cover the drainage holes. That way any excess water can just run out of the pot.

What I like to do now, is foliar feeding.

That way, I can keep the nutrients you put in the soil very low. It is also a great way to avoid nutrient deficiencies, if you mix a broad array of nutrients into your spray. (I'm combining BioBizz Grow formula, Algae-Mix and a little rooting nutrients.)

But make sure you water or foliar feed at the beginning of the day, so the water has time to evaporate and also make sure the lamp or sun doesn't make the spray burn the leaves.

When the plant is big enough and the roots are very well established, and you're seeing a lot of fresh green growing tips, you can *slowly* increase the amount of nutrients you put into the soil.

About your soil mix...

Make sure you mix in some sand as well as perlite so the mix dries more quickly, and maybe a little coco coir (after it is well hydrated - I like to let it soak for a couple of days).

I think that drier soil is also looser soil, which makes it easier for the roots to grow.

To see weed in it's natural habitat:

http://www.youtube.com/watch?v=kCu_LCIqZdk

 

[THRIPS AHOY!]

that looks like its promix or sunshine mix so if thats the case it shouldnt be a problem that would such problems in such a young plant.Looking at the pic it looks really dry and the perilite is nice n shiny white so it dosn't look overwatered.Have u been feeding them enough, N def is a possibility.What are yer temps like,too hot maybe.

 

[SquallRealm]

My friend had the exact same problem as you. His solution: Tap water.

Make sure you don't use water that goes through a water softener, and that you leave it out for 24 hours so Chlorine may evaporate.

 

[ANOMOS]

The soggy (mouldy) tip of the one leaf makes me think of a combination of lack of fresh air and overwatering.

Now overwatering could be a function of the plant locking out both nutrients and water, because of a poor ph or overfertilizing, and you subsequently watering/feeding before the soil was well dried out. Or the soil texture could be not loose enough for proper root penetration.

well, i overwatered one last week, so maybe thats why the leaf looks that way. for fresh air, im not 100%, i know there is enough pressure on the passive intake to provide 'fresh' new air a few times a min, the arugument on weather or not my room/apt has fresh air is one that im not sure on, i dont really open the windows that much, but the air in the room isnt stale.

Its not looking any better, in fact im thinking about popping 3 more this week. so if i do pull em out i will check the roots.
the soil felt loose enough, and i put in alot of perlite about 45%. I also let the soil dry out, and test a few inches down. but i would try putting some on the bottom, never seen that before.

Isnt a foliar feeding a last resort? i wasnt sure about it, and if i should do it for the next feeding. and when you do give it to them, are they the same ratios that you would feed in the soil?
thanks for the advice

that looks like its promix or sunshine mix so if thats the case it shouldnt be a problem that would such problems in such a young plant.Looking at the pic it looks really dry and the perilite is nice n shiny white so it dosn't look overwatered.Have u been feeding them enough, N def is a possibility.What are yer temps like,too hot maybe.

its FF ocean forest, and no i didnt feed enough from day 25 to day 31, i mixed it up, giving them the BigBloom instead of the GrowBig, i think thats why they yellowed. temps are all listed above. its not in the 90s, and i would freak out whenevr it would go above 85 so i dont really think thats the issue

My friend had the exact same problem as you. His solution: Tap water.

Make sure you don't use water that goes through a water softener, and that you leave it out for 24 hours so Chlorine may evaporate.

i have been adding calmag to my soft water, so i thought that would resolve those water issues


ill try to get a camera again to get some more pictures of them tonight or tomrrow, they are a looking pretty much all droppy, and i have been giving them water/feeding, and not too much. but would like advice on how to foliar feed

 

[SquallRealm]

i have been adding calmag to my soft water, so i thought that would resolve those water issues

Are you using distilled water or tap water that's been put through a water softener? Both are equally as bad but in your first post it says you are using distilled water with 1/4 tsp calmag added. First of all, this is not nearly enough calmag if you are using distilled water. And second, I was using distilled water with 2tsp of calmag added and I got the same problems you are having. Once I switched to tap water the problem stopped spreading.

If there is nothing wrong with your tap water I think you should use it.

 

[ANOMOS]

My friend had the exact same problem as you. His solution: Tap water.

Make sure you don't use water that goes through a water softener, and that you leave it out for 24 hours so Chlorine may evaporate.

yeah, they died.
but im starting some news ones, and i will be using tap water left out.

do you know if you use a aqua pump how long until the tap water is usable?
i have heard about people using them and was unsure how much quicker it was then leaving it out for 24hrs

 

[SquallRealm]

Is it a water filter?

 

[ANOMOS]

Is it a water filter?

sorry i didnt see this reply,
i was thinking of air stones / fish water pump, i swore that i saw people saying they use that in their tap water instead of just leaving it out for 24 hours.

but its cool now, i leave out a couple jugs and im all set. fingers crossed this time.