Temperature, humidity, MOLD problem...

ghb said:

i see no mould, just leaves that are dying which could be from a number of things, possibly:

NuTRiEnT DEFiCienCy
over fertilization (UNLIKELY)
not getting much light so pointless being there.
came into contact with soil/feed and got burned


numerous reasons really, i wouldn't worry about the lower leaves too much, it's the tops you wan't to kep nice and healthy.

p.s forgive caps/ spelling my keyboard is gone kaput

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sworth said:

I'm not sure it's mold either, here's bud with mold.

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ErikBL said:

Hello. Yesterday try to got some information here but no news.

So my problem was, that I think I have MOLD... Is it?

View attachment 2344595View attachment 2344596

Yesterday I bought dehumidifier, which helps me a little. I have humidity with out it ~70-75%, but today my humidity is 64%... I'm in flowering 3th week.

But I went to my grow room at night when is my dark cycle, and found out that humidity when everything OFF is 88% and temperature geting lower and lower about 15C (at day cycle it is 22C) ... So I put in heater and run all night circulation fan. Humidity decrease to 65% and temperature was 24C... Today humidity is 64% and temperature 25C...

And as I read i think I over water them, so that cause MOLD in my opinion. Last time I water them was 5 days ago, soil is still moist...

So my questions is:

1) Is it mold? I cut all MOLD leaves and try to get warmer, more ventilation and dehumidifier... Will it help?
2) Is it ok if my temperature at night is only 1C lower than at day cycle?
3)Will it help me prevent any other MOLD if I correct all needs for it?
4) Would I need to remove sick plants from grow room, or just cut leaves?

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ErikBL said:

But some flowers getting brown too! There is picture! View attachment 2344774

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Sir.Ganga said:

Looks like wind burn?? Where are your fans positioned? Your temp can stay the same 24-7 but you should not dip by more than 10 degrees. Youe floewr room should be really low in humidity. I run 2 de-humidifiers at night and one during the light cycle.

My humidity never gets higher than 40% and has been as low as 15% in the winter months. If you keep your humidity under 50%ish(depending where you live) molds and fungus can't live. So that is how you keep mold out but I do not think you got mold. If you look at your second pic you will see little balck spots on the tip...concern yourself there...in that pic it looks like thripe shit on the leaf.

Good luck

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