First Time Caller...

Hi Stinky,

Many thanks for the feedback, I thought it could be normal yellowing of leaves, but being a noob it is always nice to have confirmation.

I do have another question about one of the other plants though as the yellowing seems to be slightly more than the other two. Just wanting to know if this is normal as well or am I missing something here?!

The buds are still growing and frosting up nicely, just seems to be an exsessive amount of yellowing leaves on this one?

Many thanks again for all the info you have given me during my first grow so far, been a massive help.

Cheers.

can you get pictures with the HPS turned off? I can't tell where the yellow leaf ends and the yellow light begins. That upcurl is worrisome.

More pics, hopefully a bit easier to see.

What causes the leaves to curl up like this? I've done a bit of searching but there are a multitude of different answers coming back from (K) deficiency, (Mg) or (Zn) deficiencies, bit of a mine field.

Thanks for the input.

Cheers.

It's hungry. That plant is using up N too fast. Make sure your runoff pH is not too low, and if you have more than 3 weeks to harvest (looks like it), you can give ONE feeding with a quarter strength grow fert to slow down the yellowing.
What have you been feeding it in the last couple weeks? Just bloom, right? Does that bloom fert show a N number on the label at all, and if so, what?

EDIT- not K, Mg, or Zn def. N and Ca def or lockout. What was the date of your last re-pot?

Hi Stinky,

Ok, here's the story.

The plants are being fed the range of bio bizz products - bio grow, bio bloom & top max. Soil is bio bizz all mix. I can't remember what the NPK is on the front of the bottles, grow and bloom do say, top max has nothing but I do not have them to hand at present.

PH of the the tap water is 6.8-6.9, ran 600ml through the plant last night and it came out at 6.5, acceptable levels.

Have been adding the following amounts of nutes per litre of water:

bio grow - 2.5ml
bio bloom - 3.5ml
top max - 1ml

Been feeding them all with about 500ml each. The bottles say on them to add this with every watering, so I have.

Have also been following the bio bizz feeding schedule (attached below) a bit, but obviously not to the letter, on when to start it with nutes etc.

This particular plant is one from an earlier question which I believe had nute burn (yellow tips on fan leaves) and yourself confirmed. Fed it only plain water for two feeds after that (500ml each time) and then started it back on the nutes (as per feeding above)

Being a newbie to this, I haven't transplanted them once. I now realise that transplanting as they grow up is better for them, so leason learned. I grew the seeds in peat pellets, then when the roots were showing through the bottom, put them straight in to the pots they are in now (10L - 2.2 gallon). Been in these pots for probably just over 2 month now - 4 weeks veg, coming to end of week 5 flower this Friday

The other two plants seem to be getting on alright, bit of yellowing but nothing as serious as this one.

Any more info you need to help with diagnosis, let me know.

Cheers.