powedery mildew

Well swim have powedery mildew and ot has spread thru all the plants. I've had it since my last grow but I'm not sure how big of an effect it has since swim havenrt had enough harvest to compare crops. So my question is how bad can it effect harvest? Swim bought a fungacide that swim was sprying during veg to control it ; but it stinks like hell and def don't want to use it during flowering. (Even tho it says u can use till harvest). How do swim get rid of powedery permanently? Do swim have to get rid off all plants and start over? Thanks in advanced


Strain:white widow
FF line of nutrients
400 watt bulb
Currently 4 days flowering

dont take this as gospel but i seem to remember my buddy using either copper fungicide and garlic water( boil a load of garlic in a pot and foliar spray) remember when spraying not to have the lights on

take all ur plants out the grow area and clean ur area down with a mild antisceptic solution( i use a stuff called dettol or milton sterilising tablets, there used to sterilise baby bottles)buy a few cheap spray bottles and label them in case of mix up and always have them handy. one major cause of mildew is humidity issues, the humid air drops onto the leaves when the air cools down after lights out, this happened to my mate when his fans broke down. i always keep a small clip fan on 24 hrs a day, my oscillating fan is on when my lights are. always after every grow whether uv had any problems or not sterilise all ur gear, even wipe ur light bulbs.

Yea thabks mann.swim think the humidity is the problem. Swim think the temps drop too much after lights off.swim has the lights on 24 hours and swim just manually move the plants.I've heard of mixing water with baking soda as well. Swim also noticed diff plants are not affected. Swim has 3 phenos of kush,la bubble dentials,vortex,WW and a haze strain out of all those the one that seems to be affected the most is the WW which happends to be swims top plant