more advice needed please

hi there
im back for a little more advice please !

15 litre pots
house and garden bat special soil
hps lights

terra vega
superthrive
stimulator 1
ok so these plants are from seed and are 1 week into 12 / 12 ive noticed a lot of lower leaves yellowing and dieing the tops look fine

anyone with any help please its much apreciated as daily there seem to be more and more yellowing

root-bound.
pop it out of that pot when root-ball is damp, not wet, and inspect. if all bound up, pot up, or prune roots.

hi there just a quick reply
these plants are almost 2 weeks into flowering there was one plant that was really effected so i decided to remove it here is a shot of the roots


would you still agree that this was what causing the problemand when you said prune the roots should i remove as much of them as possible
thanks

Thc247 said:

hi there just a quick reply
these plants are almost 2 weeks into flowering there was one plant that was really effected so i decided to remove it here is a shot of the roots
View attachment 3183307

would you still agree that this was what causing the problemand when you said prune the roots should i remove as much of them as possible
thanks

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no.......those roots look fine........literally. flower away

thanks for your quick reply really apreciate advice the one i got rid of was the runt out the lot what could of caused this yellowing in first place do you think ?

Thc247 said:

thanks for your quick reply really apreciate advice the one i got rid of was the runt out the lot what could of caused this yellowing in first place do you think ?

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that pot is too small, even if it wasn't root-bound. use bigger pots, that can hold nutrients and moisture.

I'm far from an expert but the plants looks like it's trying to move nutrients upwards towards bud production.

Have you changed you nutrients since going into flowering?

Are you familiar with the strain?

Roots look great btw

what size pots would you advise for future ref plz i must add to this i had problems with insects so didnt flip when planned and these ran into 4 1/2 weeks to 5 weeks vegging when i would of normally flipped at 3 1/2 - 4 weeks im presuming the extra weeks veg must of outgrew the pots then should i re-pot into 20 litres or just flower them out im expecting 9 weeks flower just into 3rd week now

many thanks in advance

small, more frequent feedings may be needed due to small pot.

I use 10 gallon totes

mr.schroederific said:

I'm far from an expert but the plants looks like it's trying to move nutrients upwards towards bud production.

Have you changed you nutrients since going into flowering?

Are you familiar with the strain?

Roots look great btw

Click to expand...

i have switched to flowering nutes now terra floors i used terra vega throughout veg along with superthrive and stimulator 1 after 1 week of flipping them i changed to terra floors and as of tomorow i start with bud xl

during veg they recieved 2 litres every 2 days now i have been giving 3 litres every 2 days

Thc247 said:

i have switched to flowering nutes now terra floors i used terra vega throughout veg along with superthrive and stimulator 1 after 1 week of flipping them i changed to terra floors and as of tomorow i start with bud xl

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Familiar with the strain? Sometimes they just get ugly, it's the plant focusing on bud production.

ive never really bothered with ph as was told by few good friends that with the correct soil and nutrients the soil auto buffers the ph but when tested the ph after adding nutes is 6.3 i dont get hardley any runoff after 3 litres just a little trickle into tray i must add the tops of the plants are really looking well i just didnt want to ignore the yellowing to find later it takes the whole crop

ive grew different cheese strains previous but this was a new strain to be honest green house cheese its apparantly uk cheese cross kush last one i grew out was uk cheese cross afghani so you could be correct with the strain i just hope it doesnt take over before due
thanks to all i will post updated pics later on tonight