day 21 yellowing tips.... HELP

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hey guys so i went and checked on my plants yest and the tips off the new leaves coming threw seem to be coming threw yellow?? i must mention that i am using canna terra pro soil mix and had just give them their first shot of neuts the day before using 1/4 strength the recommended.... up until then all off my plants looked fine and healthy, i dont have pics atm. but wil get some later... do you think its a bit off neut burn or wdc??? any1???
 
Could be overfed but we'll need the pictures to see for sure.
 
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Need pictures.


hope these help picture quality not great some are fine others have this yellowing on the tips? do ya think it has maybe just had a shock from the neuts?
 
Really hard to see for me =/ sorry.
 
I really don't see a problem and 1/4 strength nutes shouldn't cause burn at there stage.Just make sure you keep your ph in line and give them some cal/mag on occasion .They look a little dry but other than that they are looking fine.
 
I really don't see a problem and 1/4 strength nutes shouldn't cause burn at there stage.Just make sure you keep your ph in line and give them some cal/mag on occasion .They look a little dry but other than that they are looking fine.


thanks namvet, this is my first grow so really dont know what to expect, just been doing a lot off reading and information finding on line to help me along the way, and off course getting lots off info off afn, they prob do need watered, i watered on thurs evening about 800ml, i plan on doing another feed either in the morning or monday, but after your input and some 1 saying the same thing on my journal i think im gonna go for it tomorrow, do you think 800ml is enough at this stage??

and cheers again pal:Sharing One:
 
theres no need to measure your water. Just water a little at a time uintil you see water coming out the pots,and you should have a overtflow tray to catch the runoff and some of the runoff will be suck uped by the bottom soil.
 
Hi Willow- I see the slightly torched tips, and #1 suspect for this on new growth only, and no other symptoms on the other leaves, is nute' burn,... I don't know enough about that soil, but if 1 round at 1/4 strength started this, it's right on the edge of too rich.... Are all of them affected, or just a few? same strain, or mixed company? Is the newest growth looking distorted, and/or have browned out tissue? *** That upper middle one looks a bit pale to me, but nothing alarming,... Otherwise they look great! So, skip the regular fert's for a bit, but don't flush, it's not looking that bad,... Maybe try adding a little molasses to the water next time, like 1 level tsp/qt., to stimulate the soil herd and see if they can suck up some of the excess primary nute's for a bit.... let us know if there's been further progression and symptoms, okay? :Sharing One:
 
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