My girls start to get yellow

Hi Guys, my second grow and I seem to have a problem with my Auto cheese from Dinafem.
My set up to start with:

120x120x180 tent
1 x 6" systemair L1 as outake
1 x 6" systemair A1 as intake
both controlled by a SMS 4.5 Amp Fan Speed Controller
1 x 9" desk fan
1 x 16" pedestal fan
1 x 600w dual spectrum sunmaster mounted on a euro reflector
tank is a GT250
Feed is Canna

Saturday they started to have yellow tips and be dry a bit, the Temp was running high at 32C so I went to the shop to get the controller and the intake fan as I used passive intake till then, the temp went down to around 26C but since the leaf are turning more yellow but stopped drying. after a look at some post I assumed that the issue could be with feed/PH so earlier today I have emptied the tank and refilled with water with a PH of 5.6 and 1ml of Superthrive to try to rinse the rot system and rockwool. I posted some pics for you to tell me if you could think of anything else. Look forward to any advice.
Peace

keep temps 22-28c

your pictures are useless except to show you are well into flower, ...if you're nearing the end you are SUPPOSED to see yellowing, that shows that the plants have used up the nutes in the soil and are now working on their own reserves.

...so if you are close to harvest that yellowing is a good thing.

peace, bozo

Thanks Guys, Bozo the girls are at 41 days from seeding and should still have around 30 days still to go on paper so not quite ready yet. they are buding but only nice white nuggets. also doing them hydro so no issue of soil running out of feed, Just wasn't sure if they had too much or not enough food. I will leave them another 20h flushing with water at the correct PH and start the feeding regime again. if any of you got any idea feel free......I know the pics are not great so will take some new one tomorrow as soon that the lights goes off to have better quality.

Peace

cedders said:

Thanks Guys, Bozo the girls are at 41 days from seeding and should still have around 30 days still to go on paper so not quite ready yet. they are buding but only nice white nuggets. also doing them hydro so no issue of soil running out of feed, Just wasn't sure if they had too much or not enough food. I will leave them another 20h flushing with water at the correct PH and start the feeding regime again. if any of you got any idea feel free......I know the pics are not great so will take some new one tomorrow as soon that the lights goes off to have better quality.

Peace

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...the pics are important because they will help show if your girlz are just hungry or locked out in some way. ...i'm no expert on autos but the better the pictures you share, the more likely you will get help that actually helps, if you know what i mean.

...41 days makes me think just hungry but only you can actually SEE your plants.

sorry i can't be more help than that.

peace, bozo

Better pics.




will flush them again tonight to get the PH in the rockwool to come down and start a fresh feed tomorrow evening, hope that will help them out......would not like to loose my cheese!

u have a sevear N deficiency that probably started when they started the transition to flower. when they are in that strech phaze they grow a a super accelerated rate for 7-21 days depending on strain of course. they use a shit load of N in this phase so its not a wise time to skimp on the nutes. none of this helps u now unfortunately but adding and extra source of N for a week should get u over the finish line. possibly a light foilar feed being careful not to get to much on ur buds. looks like sum nice autos so i hope u get the issue solved before shit gets crispy on ya.

sacpirate said:

u have a sevear N deficiency that probably started when they started the transition to flower. when they are in that strech phaze they grow a a super accelerated rate for 7-21 days depending on strain of course. they use a shit load of N in this phase so its not a wise time to skimp on the nutes. none of this helps u now unfortunately but adding and extra source of N for a week should get u over the finish line. possibly a light foilar feed being careful not to get to much on ur buds. looks like sum nice autos so i hope u get the issue solved before shit gets crispy on ya.

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i agree with your diagnosis, but i disagree on the foliar feeding.

spraying in a closed environment like a tent with those fluffy nugs is an invitation to powdery mildew and budrot.

restocking the reservoir with fresh water, and some good flowering potion, plus a splash of bonus nitrogen will fix em up right quick.

Dr Kynes said:

i agree with your diagnosis, but i disagree on the foliar feeding.

spraying in a closed environment like a tent with those fluffy nugs is an invitation to powdery mildew and budrot.

restocking the reservoir with fresh water, and some good flowering potion, plus a splash of bonus nitrogen will fix em up right quick.

Click to expand...

normally id agree with ya but he has enough air exchange available to speed up his fans and reduce ambient humidity enough to do a light spray and be just fine. ur method sounds just fine as well my man

Dr Kynes said:

restocking the reservoir with fresh water, and some good flowering potion, plus a splash of bonus nitrogen will fix em up right quick.

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Doing the fresh tank with Canna Aqua Flores. Have you a brand or product name in mind for the nitrogen, only finding organic product online but using NFT so no good I think?
Cheers

cedders said:

Doing the fresh tank with Canna Aqua Flores. Have you a brand or product name in mind for the nitrogen, only finding organic product online but using NFT so no good I think?
Cheers

Click to expand...

Wait before filling with CANNA FLORES.

Do you have any CANNA AQUA VEGA????


Refill with the vega if you have any.

I use this the whole way through.

I grow in coco using it with extra Ca and Mg.

I used to run hydro with canna in a wilma 4 pot. My plants did the same. Switch back to the vega but still add the PK1314 and Rhizotonic like you normally would.




J

cheers mate for your advice, I didn't see your post until now so too late for the Canna Vega but just added some Rhizotonic. I spoke with my grow shop today and they have a Canna product that will help with N deficiency...will be down there to pick it up tomorrow morning and add to the tank right away and hope for the best. Will post some pics before harvest to show the result. Thank again for te advice.
Peace