23 days to go now these black spots , any ideas?

23 days to go now these black spots , any ideas?

My first guess would be a potassuim def. What is your feeding schedule because they look very pale for 5+ weeks. I could be wrong here though, deficiencies are not my area of expertise.W

yeah are they really that pale looking? i would add some more N and some cal mag.

Did you switch to flowering nutes when you switched your lights? Or did you keep using vegging nutes for a few feedings after you switched the lighting? If you switched straight to flowering nutes, then that's probably what the problem is. Your plants shouldn't be yellowing at any point in your plants life. People just don't give their plants enough N in flowering and starve them for the last 2 weeks by flushing them.

no guys i just went straight to flower nuted n i think obviously this is y so pale 5 weeks into 12/12 next i will continue veg for a week or 2 in to 12/12,, give it some nitrogen for the journey, the black spots well not so obvious !!!!!

Could be nutes but looks similar to thrip or bug damage, what are the bottom leaves like?

they seem fine ither than bein very yellow now, i did introduce a little home made c02 bottle in me tent the other day, probly a coincidence but ya never no? its just im'e so close to the end and now the fookin thing,lol, if it one thing its another, first time so new there wud be some headaches allong the way, just want somethink 2 smoke man !!!!!!

look up thrip damage, im sure its not but looks similar, worth checking though.

i looked it my man, but its not that, its like little splashes of dark dots diferent shapes e.t.c. so not thrips !!!!!

If its not insect damage it is deficiency, common ones at the top at the end of flowering for me are boron and a few others. Add some micro nutes and boost the nutes if you are underfeeding.

Every time i get burning like this it is when i am underfeeding. Look for it to stop after a day or so from feeding and added micro nutes or start to consider somthing else. Peace

looks like the beginning of cal def.

I agree with Kingrow1, its either a Boron or Iron def. But I would stay away from previous comments about your plants looking pale. For many species of cannabis, especially Sativas, fan leaves turn lime green or even brown at the the peak of flowering...its nothing to worry about so dont go looking for the N ferts, itll only make your plant taste like shit when smoked!

Quite possibly you are deficient in a lot of things just at this late stage boron shows through. Iron is another good one and manganese i think. If the plants are pale nitrogen would be good but a lot less than phosphorous or potassium. Some like a nitrogen deficiency at the end of flowering but too much is bad, should be like a minor deficiency not a major one.

You should be able to look back over the flowering period and the ferts NPK and trace elements that you have given the plant and be able to work out wether you simply been underfeeding or just need more trace elements.

This will only be underfeeding if it stops with a good fert and especially the trace elements, somthing like liquid seaweed should take care of that. Keep us updated. Peace

thanx kingrow1 man for ur input n time !!!!!

Post pics and keep us updated. Peace

Will do dude !!!!!!!!!