Hello guys is this White Powdery Mildew and if so how should I treat it?
The L spam is because of title 15 character restriction
2 Likes
Two questions:
Are you using a humidifier with tap water?
Are you spraying the plant with anything?
2 Likes
Looks like it.
50/50 mix peroxide and water sprayed at lights out.
Put a fan on them after so they’ll dry a bit quicker if you can.
2 Likes
I’m not using a humidifier
Aside from some water that falls on the leaves when watering I’m not spraying anything on it
However lately I have had some humidity spikes in the 70% (after some time they get back down in the 43-56%)
I’ll soon get another dehumidifier to keep it below 50% in the 40-45% range
That’s probably why it developed
1 Like
Humidity is not why I asked. Growers will get similar deposits when using an ultrasonic humidifier with tap water because the minerals in tap water are aerosolized and distributed in your grow space. It appears as a white powder whereever the mineral dust settles.
I would spray it as advised above. It won’t harm the plant at all and if the issue resolves with peroxide, then it was indeed WPM.
5 Likes
Ok ok good to know, will definitely spray and keep you guys updated thanks for the advice as usual👍🏼
1 Like
Will do thanks for the advice
1 Like
I need to clarify what I wrote above. High humidity is a cause for WPM, so it isn’t irrelevant as might be perceived from what I had written. I was asking about the use of an ultrasound humidifier with tap water because we see related mineral deposits that look like WPM occasionally.
You shouldn’t be having WPM problems in this range unless the spike high durations last for too long.
4 Likes
spike last for like 30 minutes in extreme cases 45m
It just happened it was at 70% like 25 minutes Agos and now is at 49%
I suppose I’ll spray it and monitor the situation
1 Like
When I changed my lights out I stopped running fans at dark time thinking it would be good also lowered my temp to lower humidity wrong!!!. Plants need some humidity to breath so by me taking away thinking I was good was wrong. So my lung room has a dehumidifier and the tent has a humidifier no WMP tent temp run around 84-86 humidity 50-55 range
2 Likes