Leafs get brown and curling.

[gonz_DK]

Hi friends, I need your help once again.

Ive planted clones into 11l pots with a soil and perlite mix the 25. last month. The first week every think look really good, but then the leaf begun to get brown tips and curl. I thought and still think, that the dirts nutes was used up so I gave them 20ml of canna Vega and 10ml rhitzotonic Thursday in this week. But they just continue getting brown and curl.

SOIL:

How long has this problem been going on? A week.
What STRAIN are you growing? Chemdog D Ix1
What was the establishing technique? (seed or clone?) Clone
What is the age of your plants? I cut the clones the 17-9 and planted them in soil the 25-10
How Tall are the plants? From 11cm to 15cm
What PHASE (seedling, vegetative or flower) are the plants in? vegetative/ root formation
What Technique are you using? (SOG, SCROG etc) None
What size pots are you using? (Include how many subjects to pot) 11L
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?) Plagron Royalty Mix 50L 50% and perlite 50%.
What Nutrient's are you using?How much of each with how much water? How Often? *Knowing the brand is very helpful*I have watered once withe nutes, Thursday the 6-10. 20ml Canna Terra Vega and 10 ml Rhitzotonic.
What is the TDS/EC/PPM of your nutrients used? ?
What is the pH of the "RUN-OFF"? 8,7
What method of pH test was administered? Using Strips? pH pen? ph instrument
How often are you watering? Every third day.
When was your last feeding and how often are you feeding? My last feeding was two days ago.
What size bulb are you using? 400watt
What is the distance to the canopy? from plant to bulb, 50 centimeters.
What is your RH Factor? (Relative Humidity) 35-40%
What is the canopy temperature?Under the bulb,the temp is going from 28 degrees to 33
What is the Day/Night Temp? (Include fluctuation range) 17 in night time and 30 degrees in day time.
What is the current Air Flow? (cfm etc.) As it should be.
Is the fan blowing directly at plants? yes one of them are.
Is the grow substrate constantly wet or moist? No
Is your water HARD or SOFT? Hard
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? Tap or rain.
Has plant been recently pruned, cloned or pinched? Yes.
Have any pest chemicals been used? If so what and when? No
Are plant's infected with pest's? No.

Here´s a clone I planted out, three days after the others.

 

[stihgnobevoli]

nuteburn/lockout caused by your high ph. that shits way too high it shouldnt be higher than 7.2 no lower than 6.4 in soil.

 

[gonz_DK]

Its the run off thats 8,7. When I water, its obout 6,5 and 7. But until few days ago I only watered with rain water, and that shit is only about 7,5. So it isnt what you are saying.

Please help me.

 

[Marshmello]

I can only speak from what I have read here because I'm a noob but I would
say that from what I have seen the RH is too low. Everything I read says veg chamber should be 80-90%.
Also, if your pH is 8.7 it can't be a good thing, in anyway.
I wish I could offer more help and I hope someone can.
Good Luck.

peAce

 

[Core]

royalty mix is soooo hot...i think they are stunned....I suggest you water them with only water for a a couple of weeks.....your not in the clear yet...and with that high of ph you plant should be toast.....runoff is't always accurate as a reading..It only indicates.....and on top you are giving 20 ml canna vega already...per liter or gallon?? in any case thats not good combined with that royaly mix....

 

[gonz_DK]

If you right, Im dead.

They didnt show any signs of nute burn the first week, at all. So thats why I gave them 20ml to 10l water.

Can it be saved, or would it be easier to start all over ?

Thanks for the help, btw.

 

[Kooza]

If it's nute burn flush with 3x the volume with good ph water.That should leach out any nutes.

 

[Core]

do go jumping overboard.....plain water in the near future....i sometimes have that to with my plants...I took a pic specially for you .....this is how they turn out after a while of canna professional....bit worse ...but new growth is looking fine and that is what matters here...you can see i cropped her...and her new growth is greener as you can see on the bottom of the pic...





i see many people confuse this with a N def or a Magnesium shortage...and its not...but as always, when you see a few burned tips you are giving to much of something.....or just enough !

 

[gonz_DK]

Not just yet..... Maybe its my luck, that I flushed all off them with 20L rain water each, the day before I watered with nutes. I did that because I wanted to make sure that all the nutes from the soil was gone, because I had a conflict going on in my head. Was it too much or to little !?
The main reason I thought it was, a lack of nutes, was because I had mixed around 25l unfertilized soil in the Royalty mix.
I´ll give it three weeks and if I still having trouble, I´ll start all over again with a seed, mother and so on.

Thanks again for your help.