Stumped

[soxx16]

hey all, im stumped in trying to figure out what is wrong with this herb. i cant post any pics at the time, so i will try to go into as much detail as i can.

problem the tips of all the fan leaves (just the tips) are curling down. i think this may be an overwatering/strong nutrient problem. that plant has gotten a good heap of h2o in the last 2 days.

The strain i'm using is a bagseed og kush.
they are approximately 3-4 weeks old.
i just swicthed to flowering a few days ago, only gotten three 12/12 cycles.
i'm using a let it grow the way it wants to method with a little tying down later as they stretch.
the kind of pot that it is in is a 5 inch square pot, about 6 inches tall.
the medium is miracle gro organic choice soil, nothing added. this soil hasnt given me problems, and i've used it for many things, not just cannabis.
the nutrients being used are foxfarm. the last few weeks they've been given a healthy 2tsp/gal of grow big. the last watering i gave them 2tsp tiger bloom and 1tbl/gal of big bloom. i think this is where the problem lies. i might have added a little more nutrient solution as i should have.
I dont know the pH of the soil, i dont have any strips.
I've been watering everyday. ive got four plants, and they all seem to be doing well on getting a lil more than a pint (a pint between all) a day. the last time they got nutes was two days ago.
the bulb being used is a 150w hps.
it is 10 or so inches from plants.
humidity is between 35-45%.
the temp extremes are low: mid 60s high: low 80s (82 is highest)
there are fans blowing on the plants, just the top tho. not the soil.
i've been using distilled water bought from walmart because my water sucks.
i really do not think this is a pest problem. ive saw gnats buzzing around in the begining of the operation, but that was from the soil i used to start with. since then, i changed back to miraclegro and havent seen the gnats.

i think that this is just an overwatering, but please correct me if im wrong. i know it gonna be hard to tell without pictures, but its not hard to imagine. the tips of the leaves are curling down.

in the mean time....

 

[Guest]

just the fan leaves tips are burned crispy or just curled?

 

[soxx16]

they are just curled, not burned

 

[Guest]

is there any yellowing at the bottom of the plant...also 20 degree temp swings are going to efect something i imagine...im not a soil grower but i can get you a link for stitches complete guide to sick plants if you would like

 

[soxx16]

the last time i checked on the plants was about 10pm last night. i was going to get up before the lights went out this morning, but they turn off at 9am and there is no way in hell im going to wake up early on a saturday. college students need rest. so i cant tell you if they were yellow at the bottom or not. last night, they were all green. i got some pics, a friend of mine had them in his gallery.



its the one on the right side, in the front. you can kind of see it, the tips are curling down.

brainthor hell yea a guide to sick plants would be awesome! its something i need to read up on to gain knowledge on.

 

[i love herb]

you shouldnt feed them everyday, once a week


and you need to make sure you are ph adjusting your water otherwise nutes are almost completely useless

 

[soxx16]

ok, ill run to the store and pick up some pH strips. can you find them a hardware stores like lowes or menards?

 

[R.A.]

Hey man,

if the tips are curling down, it has to do with calcium.

Go get your self a means of testing ph, but i wouldn't worry too much about it in soil grows.
Like u said, it's the nutes dose that caused your problems.

Just water your plants with no nutes once and then keep feeding at half the strength.

Finally, keep an eye on new growth. I mean, don't expect the curled leafs to fullt recover.

Good luck

 

[MynameStitch]

Hey R.A, tips curling down has nothing to really do with calcium; tips curling down could be lots of things; moisture stress.... to much nitrogen.... could be a # of things. If you want to know what a calcium is..... It starts on either leaves edges or inner part of the leaves and it happens in spots like form looks like zits with a brown spot in the middle

They are small round dots. If it progresses in the middle of the leaves it happens randomly around the leaf that it has affected. It's a immobile element which means does not move around the plant; will stay in a certain area around the leaves it has affected.

 

[R.A.]

hi MynameStitch,

Actually calcium def gives some curling and yes it could be other things to.

But let's not make this a contest. Like i said before, the point is that no matter what the name of the elelment causing this, the problem will go away.

The man is in flowering and the plants are healthy.

there is no need to mess around a lot, i believe.

 

[HeadyPete]

Probably overwatering. You should add some perlite, like 30% to that soil.

I also see what looks like mag def, fading green leaves at the upper part of the plant while the veins stay dark green. Hard to see from that shot with the hps, can you confirm this?

BTW, ph is very important no matter what kinda growing you are doing. Try growing with Pure Blend Pro in soil and don't adjust ph and see how those plants do.... I see tons of soil problems caused by out of whack ph here....and I'm not the only one.

 

[R.A.]

HeadyPete, PH is important to everything alive. i said that you don't have to adjust in soil grows cause it self adjusts.

Plus, it fluctuates between 9 and 6 giving plants the time to absorb all they need.

Still, out of all the posts so far the addition of 30% perlite is the most important imo so far. Best thing for fast growth and healthy vigorous plants.

 

[stinkyattic]

HeadyPete, PH is important to everything alive. i said that you don't have to adjust in soil grows cause it self adjusts.
Plus, it fluctuates between 9 and 6 giving plants the time to absorb all they need..

pH does NOT self-adjust in soil grows in a predictable (or necessarily beneficial) way unless you start with a medium of known and BUFFERED pH, such as composted humus (buffers @6.8-6.9).
Even then, buffering capacity is finite, and old or 'used' soil won't behave the same way as a fresh sack.
MG organic, while being better than other MG products, is still a peat-based medium, and the lime added to buffer pH before packaging doesn't last forever... if you've been in the same soil for more than 2 months (not an issue in your case), it's likely that you ARE dropping down low into the range that peat itself buffers in, which is less than 6!
You don't want your pH fluctuating between 9 and 6. I don't know where that came from.

The OP should check that he's got adequate drainage and run a good flush of pH'd water adjusted according to the tested runoff pH of the pots to bring them in the pH 6.7 +/- 0.2 range.

 

[R.A.]

stinkyattic,

my tap water is 8.5 to 9. After watering, soil PH drops to 7.5 or 6 during a period of few hours.

It all has to do with the concentration of water as it evaporates and/or gets sucked by the roots.

Who said anything about old sacks of soil?

and why this attitude
i suppose i have to post some pics of the ladys.

peace

 

[MynameStitch]

This post is coming from the same guy who says to water your plants everyday...... who are ya going to believe?

http://www.icmag.com/ic/showthread.php?p=1342385#post1342385


R.A.

a well drained pot will never kill a plant.
No matter how much water you pour. Much like the rain. It can rain for days but plants can take it.

It's the drainage people.

Hell you can water your plants everyday if you like. In fact, this is my way of sending oxygen down the roots. You can even listen water poping as air is sucked down.

Not to get off topic, but rain happens outside... outside is a huge pot... water can go anywhere......inside..,, small pot....... enclosed space.... big difference

 

[R.A.]

you're joking right?

 

[MynameStitch]

Hell no I am not joking..wth would I be joking for.. watering a plant everyday... I would love to see what 10K says about this one......

There is going to be a lot of people going against you on this one....... not just me.

 

[R.A.]

ok.

but why do you wanna put your self in asituation like this?

i know i'm right from experience, not only by studying plants. Think about it for a second.

All this perlite goes in there to increase drainage. To let water go through and suck down air.

Everyone suggest to put perlite in there "for aeration". What do you think makes air travel that long? water's vacum effect.

People kill their plants not from overwatering but from suffocating their plants by leaving plates under pots or not having holes at all.

Ok people have grown with out holes. I've done it and it is easy but you must keep water dose under good control.

Bottom line

Watering does not cause overwatering. There is simply something wrong in your setup.

Chill out this is an open forum about ganja right?

i like the way you are united though Stich

 

[MynameStitch]

Dood, I do not even remotely need to think about it not even for a second.. if I do... all I see is dead plants down the road... but like I said if you water everyday your plant is rootbound and needs a bigger pot... or if you are growing with perlite vermiculite mixture.

That is the only way you can water everyday and get away with it.

Perlite is just one piece of the puzzle; perlite will not help 100% stop you from overwatering.. you can add a ton of it and still have issues. Cannabis likes a good watering then it likes it's roots to dry out a bit; it does not like soggy roots. Not to mention with all the nitrogen issues you will get from all that watering; that is the start of it..... you get more issues down the road.

Na man, I am not fighting with you; we all have different opinions
Free speech I support it!
Just through the years I have been doing this.... I have seen more dead plants than anything else when people overwatering....

The way you are saying is enough drainage stops over watering....... it's like saying as long as you have enough oil in your car you won't need to change it for a long time.....

 

[R.A.]

mynamestich,
i'll tell u what.

1. i had to much smoke for 2night

2. we'll takes this on private level to show you some photos and explain why i say all this

3. watch "my name is earl" the best series right now.

randhy: i slept outside last night. was scary. i saw a possum