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your only using cfl's tho yeah? how is your ventilation?

yeah that has got worse. are you using just plain soil? ie no perlite or similar mixed in.

well i moved my temp/humidity sensor up into the canopy. humidity is about 30% and temp around 30c. i couldn't resist and oven baked a couple of buds off the plant in flower for 5 weeks. fuck, it blew my socks off.

i've not had any probs changing to 12/12 after an extended dark period. i run mine 6pm - 6am. my leccy is half price out of hours.

probably none. done the same myself on my first grow. don't bin it or if you have pull it out and plant it. hopefully it will root.

aye rockwool is a beast that needs to tamed. i'll get there. it also makes me fucking itch. i think i will crumble one up in my brothers kaks :eyesmoke:.

if you have balls like that pic then its a male or a hermie.

lo bro. ah the clones :roll:. top ups have been just ph'd water the last day or so but you may well be right. i was thinking some leaves are showing humidity or heat problems. some leaves are clawing and some are having the edges folding up. all are high up in the canopy. they are also...

waiting on your findings... all the best.

just keep supplying ph'd water. if your tap water is neutral just give them that. make sure it's not to cold or to warm. 18-20c.

have you had a look at the plants as soon as the lights come on? do they show signs of any condensation? i.e. shake the foliage or rub your hands up and down it and see if you get water on your hands?

it looks like water droplet burn tbh. i.e. droplets of water focusing the light and causing the burn. from the pics of the buds all does look ok. maybe your getting condensation forming water droplets. do you know how low the temps get when the lights are off?

are these lower fan leaves showing the spots? the brown spots look very round. have you been foliar feeding?

what's new growth look like?

sicc is right. rockwool is no good in the ag. you might get away with it if the water pump is turned off and you've got some air stones. no way will it work if the pump is on. it just retains to much water. if you manage to get roots, chances are you will get stem rot.

cool i was born in nantwich and grew up'ish in holmes chapel. i talk like a cockney tho. :lol:

ah ok. where in uk?

:praying smilie:

tell me about it ;-). btw where is albion?

all the best sicc. bigger tubs definitely pay off. the only prob is the ag pots get to small and the plants have a tendency to fall over'ish coz the pots don't fit tight like they do in the ag.