Cal def from ph probs, Nute Burn or something i'v not read about yet? please help

[magicbuds]

Hi guys sorry I,v made this new thread for this problem but i'm a bit stuck with what to do. It started 2 days ago on this one plant:





Streight away I thought calcium deficiency as it's similar looking to the plant with calcium defiency on the sick plants thread.
I tested ph with destilled water and ph- mix with 6.8ph the run off came at about the same.
With the ph run off being good I decided To feed with a half the recomended dose of cal/mag. Then I then left her 2 days checking up for any spreading. Today she definately looks worse, the edges are crispier and there are signs of blotches starting in the middle of the leafs:





Heres the other Plant I was planning on cloning her today "just bought everything" But she seems to be getting a similar problem:






I have found that the destilled water I was using for the last few weeks of the grow was 8.0ph but the run off is good now that i'm using ph minus in the destilled water.
Could the high ph water the last weeks have caused this?

The other thing I was thinking is it could be nute burn as these two plants getting problems were the only ones fed in the begining with
Biocanna special for vegitation of cannabis.
And they also had some of this Cal/Mag solution about 2 weeks ago. After this they started to grow really fast.
After tho I moved them onto Plagron Alga Grow as I was told this Biocanna has alot of chemicals.
Do you think by the pics it could be nute burm?

These 2 pants are also the only ones not in plagron royal mix they are in Compo Sana soil mix for seedlings, PH 5,0-6,5, 50-250 mg Nitrogen, 80-250 mg phosphate, 100-350 mg potassium oxide in a 20 Litre bag.
All I can think it might be now is the ph maybe blocking Calcium but I think calcium only gets blocked with low ph, no?
Or Nute Burn.
Does anyone please have any Idead what it might be ?
I'm thinking to flush em both now with 6.5ph distilled water but i'm also worried I might wash out even more nutes it needs at the min.
Please give me any ideas of what it could be.

Heres some pics of the other plants nicely growing Thanks to all your help last time










And heres my girl I decided to flower early for a tester


Thanks guys any input apreciated
Cheers

 

[Buzz Lightyear]

Hydathodes

Hydathodes

Calcium problems appear on the top of the plant not lower leaves.

Plant leaves have pores (just like your skin) along their edges. Sometimes when a plant is super wet, beads of water will form along the edges like little drops of dew especially in early morning outside. This water is gutted or forced out by the plant with pressure. Sometimes when you have too much fertilizer in your soil mix, salts are also gutted out of the plant through the hydathodes. When the water drys, the leaf edge burns from the salts. Plants need much less fertilizer indoors than outside in full sun. Try feeding less.

Buzz

 

[magicbuds]

Calcium problems appear on the top of the plant not lower leaves.

Plant leaves have pores (just like your skin) along their edges. Sometimes when a plant is super wet, beads of water will form along the edges like little drops of dew especially in early morning outside. This water is gutted or forced out by the plant with pressure. Sometimes when you have too much fertilizer in your soil mix, salts are also gutted out of the plant through the hydathodes. When the water drys, the leaf edge burns from the salts. Plants need much less fertilizer indoors than outside in full sun. Try feeding less.

Buzz

Hi Buzz thanks for the help
The prob is starting at the top too.
I should have said the really bad plant is being grown outdoors and the other one with the slight prob has 12 hours outdoor and 6 hours indoor 18/6
Thanks again for the info

 

[MynameStitch]

Calciumj can start on the top or middle part of the plant, not the lower part, if it starts on the lower part it could be potassium..

Right now it does look like calcium, but you did not mention what your feeding regimen was and how often.......

when you say what dosage you used how much with how much water?
Do you use distilled water regulaerly?
If so, I bet anything it's calcium due to distilled having no micronutes in it whatsoever.

You should be using cal/mag with every watering sensical or something with micronutes....

 

[magicbuds]

2 weeks ago they were fed 10 ml of biocanna with 5 litres of distilled water and I put 1 litre of the mix in the pots.
2 days later I fed them with a cal/mag fert I put 15 ml fert with 5 litres of water and poured half a litre in each pot.
5 days after I started to feed with Plagron Alga Grow I put 10ml with 5litres of water and fed all the plants till drops came out of the bottom.
I'v always used destilled water as tap water here is bad and not heard much gaad about mineral water.

Could this not possibly be nutrient burn ?
as it did seem to get wores after the cal/mag mix
Thanks

 

[MynameStitch]

Yes, I would be flushing her if I were youl that is a lot of stuiff to be using the alga grow I would not use no more than 5 ml per 4 liters of water.....

bio canna is that made by canna?
the cal mag is high I would not use no more than 2-4 ml per 4 liters of water, so yes flush your plants out with tap water, tap will be ok to flush them with, wait around a week before feeding, but for every watering use 2-4 ml per 4 liters of water of cal mag with every watering.....

 

[magicbuds]

Thanks so much stitch i'll give it a try and keep you posted, have a great day
Maybe i'll do a tap water and destilled mix as tap water is so hard.
Thanks again

 

[MynameStitch]

Ya, you can do that too! I just say tap water since you are using distilled water and you need to use a lot of water to do a proper flush..... if you have 3 gallon size pot use around 5 to 6 gallons of water to do a proper flush........

 

[magicbuds]

I did the flush yesterday but did only use 10 litres of water in the plant that was not real bad and I decided to only use the destilled water. The plant as a whole looks great but the yellow dry bits are still spreading a bit. And it has lotsa new growth:





The other plant which had the real probs I tried to flush but somehow it just held the water on top. I put in 1 liter of water and it took nearly an hour to drain through so then I put another litre and it was another hour so I only ended up putting around 4 to 5 litres, This plant also as a whole looks great with lotsa new growth but the brown is also spreading more:



I didn't use the recomended amount for a full flush as I figured the water might just dilute the nutes in the soil just enough without leaving them without any food at all for the week just incase a deficiency was part of the prob.
I think The 1st plant will get better actually maybe both will if kept a close eye on and for the bad plant I think i'll add more destilled water to try and dilute the nutes in the soil a bit more.
Thanks 4 your help Stich thats the second time youve saved my plants
and one more question do you think this plant is ready for switching to bloom nutrients or do you think I should leave it longer?
Shes been in flower around 7 days:





Cheers and happy Budding

 

[DIGITALHIPPY]

thats calcium def for sure.

 

[reefa cheefa]

yeah mon calcium or mabe a P. def

 

[magicbuds]

All going good now I'v done an update here if anyone interested
http://www.icmag.com/ic/showthread.php?t=84403