temp and ph problem...

hey i have some problems with flowering 2weeks in,i used rainforest 72 for cloning but since the outside temp was about -22f i coud only get about 60f in the clone room, the survival was 35% but they looked fine besides some brown marks but not much.the ph was about 6,5


ph 6,5
ec 0,9
60f
24h light
250w son t
rh 35%
rainforest clay pebbles
strain: mt cook (first time with this strain)

before i grew mk ultra never any prob even with high ph and bad clima

now in flower im using dutch pot system from ghe with clay pebbles. temp, rh,ph is all back to normal, but my babies has only grown 2in two weeks and are yellow with brown spots and burned edges espesally on the middle leaves and some lover.potassium or magnesium maybe? so my q is: can my veg situation have caused this and what may my prob be now?

thanks for any help i can get......

Quote:

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Originally Posted by bubbels

hey i have some problems with flowering 2weeks in,i used rainforest 72 for cloning but since the outside temp was about -22f i coud only get about 60f in the clone room, the survival was 35% but they looked fine besides some brown marks but not much.the ph was about 6,5


ph 6,5
ec 0,9
60f
24h light
250w son t
rh 35%
rainforest clay pebbles
strain: mt cook (first time with this strain)

before i grew mk ultra never any prob even with high ph and bad clima

now in flower im using dutch pot system from ghe with clay pebbles. temp, rh,ph is all back to normal, but my babies has only grown 2in two weeks and are yellow with brown spots and burned edges espesally on the middle leaves and some lover.potassium or magnesium maybe? so my q is: can my veg situation have caused this and what may my prob be now?

thanks for any help i can get......

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are you feeding anything? get a heat mat for those cold days. 60 isnt too bad though because its about 65 in the chamber. your ph is too high for hydro...your at soil levels.

feeding with basic ghe nutes and the temp was probalie 60f since i dont have a dome....

yellow and brown spots and burnt edges, and its 2 weeks into flower, I am gusseing you have just flushed,

sounds like a calmag defficency or nute lock out, first check the ph of water going in then runnoff coming out, it should be at about 6. if on and youhavent flushed then flush and use light nutes and calmg supliment. hope this helps.

thanks.. i found out what caused my nut prob, to dam cold veg and bloom room 60f at nigth. corrected that and used just standard ghe nuts and it looks better but they are scared for life probaly a loss of up to 75% in the end. just have to waith and see. Peace...