Claw Leaf Tips and Canoeing. Pics Included! Help Appreciated

Hello again all!

Well, I started flowering 3 days ago, switched to 400W HPS bulb from 400W MH, and switched to flowering nutes. The first night, 1 branch completely shriveled and I cut it. The leaves were drooping a bit and the tips slightly clawed down. Today, I checked before lights out and the leaves were canoeing down, and the tips were almost at a 90 degree angle downward. In addition, 1 plant started to develop yellowing from the tip gradually extending to the middle of the leaves. I have a cheap 3 in 1 pH/light/moisture meter that is showing a pH of around 7.5, which is too high, but I think it may be a bit inaccurate. A better meter will be in the works over the next couple of days. Below are the flowering specs and pics to go along with it. Also, the yellowing leaves in the first pic have been spray with straight water. Any and all help is greatly appreciated.

What Strain is it? My own hybrid
Is it Indica, Sativa or Hybrid? What percentages? Hybrid, mostly sativia
How Many Plants? 3
Is it in Vegetative or Flowering Stage? Flowering
If in Vegetative Stage... How Long? 8 weeks
Indoor or Outdoor? Indoor
Soil or Hydro? Soil
If Soil... What is in your Mix? Ocean Forest
If Soil... What Size Pot? 5 Gallon
Size (Wattage) of Light? How Many? 1 400W HPS
Is it Air Cooled? Yes
Temperature of Room/Cabinet? 79F ave
RH of Room/Cabinet? 40%
PH of Medium or Reservoir? 7.5
Any Pests? Not that I'm aware of
How Often are you Watering? every 3 days
Type and Strength of Fertilizers used? Technaflora organics according to flowering feeding strength chart
Size or Square Footage of Room? 4X4

i'd just try giving it low nutes for a bit and basically just let it grow and smoke what u get off it

Looks like your misting your plants also with the light on... I wouldn't recommend this, the water droplets make a little magnify glass and will cook your leaves and make spots.

Ooohh! Awesome info. I have been misting w/ lights on, they were fine with the MH bulb, but starting doing it after the switch to HPS. I stopped misting them for a few days, and then misted them again tonight right before lights off. I def won't do it again. But yeah, I'll see if that helps in addition.

im four weeks into flower with a similar prob on the biggest plant of eight and they are all diff. strains, i have been reading alot on the clawing effect and u r the only one that has both the canoeing and claw.
i noticed mine rite away and from what i can find on RIU so far its possibly:
over-watering: i water my 5 gal pots once a week give or take a day based on weight using sunshine promix 4
over nute: too much nitrogen causes the burn and curl or scrunching effect, the burning looks like a nute burn to me
nute deficiency: not enough mag causing plants to canoe
salt buildup: not flushing regularily enough there could b "hot spots" in ur soil

hope this helps a bit it has helped me to figure out wht order of actions i should take to make my girls turn out amazing
happy growin peace

stondded said:

im four weeks into flower with a similar prob on the biggest plant of eight and they are all diff. strains, i have been reading alot on the clawing effect and u r the only one that has both the canoeing and claw.
i noticed mine rite away and from what i can find on RIU so far its possibly:
over-watering: i water my 5 gal pots once a week give or take a day based on weight using sunshine promix 4
over nute: too much nitrogen causes the burn and curl or scrunching effect, the burning looks like a nute burn to me
nute deficiency: not enough mag causing plants to canoe
salt buildup: not flushing regularily enough there could b "hot spots" in ur soil

hope this helps a bit it has helped me to figure out wht order of actions i should take to make my girls turn out amazing
happy growin peace

Click to expand...

What if the canoeing is like a canoe upside down? Not cupping upright, but upside down? Click on my signature, I have pics galore to show you what I mean.

Hey fellas,

When you're switching to flowering, you don't want to pump too many flowering nutes into them right away, most 'flowering' nutes are high in Phosphate, some as high as 10-40-05, meaning that 40% of the substance you're giving it as a fertilizer, is made up of phosphate. A lot of these are also high in Potash, so either one can cause frying like this.

With your plants, Jesticle, the misting as Ants mentioned and general over fertilizing is causing this. The plants are going to eventually use any nutrients they need, directly from the fan leaves(if they're being deprived of nutes through the roots system). So on a nice bushy plant that you drop into 12/12, you should see the lower leaves yellow, and then you can gauge your nutrional needs by how fast those fan leaves gradually turn yellow and fall off, which is totally normal and healthy if it looks like an autumn leaf, bright yellow(within reason). But when they curl up like this so soon into flowering, that tells me you're surely overdoing it.

If you read any of my other posts on the matter, I'm generally very conservative with nutes, when growing in soil. I'm a 'less is more' grower, some like to put their plants on 'roids...don't make a diff to me. Good ph, occassional flushings, good genetics, that's the important stuff.

good advice, you gotta find that happy medium. Listen to the plants, they will tell you.

pH 7.5? thats a little high for soil. Prolly not high enough to cause much issues until the plant encounters stress and has to work for nutes. I would gradually lower it in .2 increments over the course of a week or two until you get to 6.5-6.8.

to much nitrogen...they are "clawing" i would flush them, quit misting with the lights on, and cut back on the ferts...i like to do a light flush before i start bloom nutes.gets rid of excess N in the soil, and gets 'em ready for flowerin.