yellowing at tips then drying up

[headshake]

tell him to feed them from the top, and to let the water run out of the bottom. leave the saucer off altogether. this will also help the roots get oxygen.

what's the green stuff all over the top of the coco?


-shake

[padster007]

ie told him to feed from the top i dont know why he does it. i havent got a clue what that green stuff is i thought the same. all i know he grows in coco soil uses a + b which we think he gave too much of and he gave a feed of bio - stimulant, flushed out for over 2 week now and has gave 1 little feed. but the tops leafs look good then go they same way as the other leafs. the process starts at the tips then gradually takes the whole leaf curling up then dying. he has this halo foiler spray what has magnesium supplement in it but hasnt used. its his 1st time using coco products too, which was a bad mistake, when i start ill make sure to have a good read up on this forum 1st.

and plus theres hardly any roots coming out of the bottom of the pot.

[syde00]

wow... that almost looks like ALOT of algae or forest moss but... i can't possibly picture how that much could grow that quickly there... or if it could at all... i know algae can grow on perlite, but its not like there is a ton of perlite there

[padster007]

we have repotted 5 of the plants in his last bit of coco soil and we have fed the plants 300ml each with 15ml of A and 15 mil of B and gave it 2.5ml of bio stimulant to 5 litre of water, the ph of it was 6.5. we fed the 300ml round the base of the plant but it looks like we gave it nothing as there 10litre pots is this ok???

also when we repotted them the roots looked fine and the soil was wet as he was feeding the plants 1 litre of water every other day thats why there was so much water at the bottom of the plants, some of the leaves look like venus fly traps as they've curled up and the leaves look droopy and stems or fairly droppy aswell is this a sign of over watering??

[syde00]

I don;t know anything about coca soil... but 300ml of water to a plant occupying a 10 litre pot does not sound like a lot to me...

again... not knowing coca soil, watering every other day also sounds like alot to me, but that also depends on the size of the plants, strain, ambient heat, etc. that might be perfectly normal for your situation.

from what you describe (leaves curling upwards from the sides), is not a sign of over-watering i believe... taking a look at this page: Grow Marijuana FAQ, Cannabis cultivation - marijuana growing tips & photos the symptom of those leaves could be a magnesium deficiency... but you didn;t mention yellowing of the leaves, so... that also doesn;t really fit, but i don;t know what else would cause the leaves to curl in that pattern... hopefully somebody with some more knowledge will chime in for ya

take my comments with a grain of salt though - i am pretty far from being a cannabis growing troubleshooting expert