plz help!!!!!! my plants are sick. 4 weeks into flower auto ak47

brettsog

brettsog

Well-Known Member
im experiencing 2 sick plants. first one was my healthiest plant until about 4 hours ago. i noticed a curled leaf tip. then all of a sudden they are all going that way.

here are some pics

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second one i believe is mag def. ive been treating with epsom salts for the last week but no improvement.

pics here

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any help with diagnosis would be great. i dont want my girls to die so close to them being ready :(

i have them in john innes #2/#3 soil mixed. im using canna terra flores nutes at 1/4 strength. ive been putting 1/2 tsp of epsom salts in a litre of water and feed that to the plants and have been giving 1/2 tsp of molasses to each litre every other feed for the last 2 weeks. ph of run off is around 6. im using a powder kit from homebase. havent got money for a decent meter at moment.
 
the bottom one looks calcium def. , but i'd make sure no mites, to be thorough. the top one........whew. would like to know your temps, ph, and humidity, and all the tasty info
 
temp is stable around 25/27c lights on and 18/19c lights off. humidty im not sure but they have been fine up until now. its gets humid when i have the oscilating fan on. which is about 2 hours a day at the minute. as i said ph is about 6. im using one of them small powder mix kits.
 
havent watered it for nearly 5 days. watered today as the pot was light to lift. do you think its too hot??
 
81F........hmmm......maybe even hotter right up in the canopy. heat was the first thing i thought, but i like to ask questions, since i have no life outside of my compound.
 
lol. i have a diy reflector in there. it has foil on it. maybe that was causing too much heat. i have taken it out now to see if that helps. seems a bit odd. they were fine this morning. cant believe they can change so quickly. :(
 
It looks like excess Mg is locking out other nutes incl Ca. I also use Canna and RO water. At 1/4 strength I would guess that there is more Mg than P & K plus others which is why it's showing def of others. Onece they really start budding the P& K needs to be increased (depressed my the Mg).

Leave the Mg for a bit and increase the nutes a bit instead. Unless u are using RO, then decrease the Ca & Mg that u add.

Good luck !!
 
Yes, the mollassses could cut out the N too and it's not necessary. Look at the back of the canna bottle, there is Mg in it.
Try upping the nutes first.
 
brettsog said:
so basically stop the epsom salts and molasses and just increase the amount of nutes im giving?
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If you're still adding epsom salts then u may have caused a slight o'd I would rinse the soil a little or rather. Flood the pot some to rinse out some of the salts.
 
ok. the girls are moving home today anyway so ill stick em in the bath and rinse them through before they move. then ill increase the nutes to half strength for the next 2 feeds then im gonna flush fr a week as they should be almost ready.
 
brettsog said:
ok. the girls are moving home today anyway so ill stick em in the bath and rinse them through before they move. then ill increase the nutes to half strength for the next 2 feeds then im gonna flush fr a week as they should be almost ready.
Click to expand...

Good call but a little bit longer won't hurt you after the last flush I would go to 11/13
 
what about the top plant. do we think that is just heat stress? it doesnt seem to have gotten any worse since i took that diy hood out.
 
Just give it some time to work itself out. Alot of times we over react and don't give our fixes time to work.
 
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