Help please!!!

hey everyone i have 2 clones growing atm 1 in soil pot using homemade compost tea for fertilization the other is in a mini single plant bubbleponics system in a rather large stealth px grow box, its been a week now and my babys are doing well however a few days ago i noticed some strange white powder on two of the older leaves i didnt get any replies when i last posted about this so i hope i do this time
some areas of the leaves are also turning purplish and the stem is now completely strong purple. the powder seems to have grown large covering more on the leaves ive looked it up and i think its powdery mildew. how do i get rid of it? im only using maxicrop seaweed solution for nutes atm im unsure wether to carry on the bubbleponics or just transplant to soil the roots are taking a long time to come through. please help the plant is growing new leaves a little slower than the other one in soil and is discourlored i dont want it too die please help + rep

any experts know whats wrong?im using CFLS for lighting and the plant in the soil pot is realy well. also the new leaves erupting from the bubbleponic plants are somewhat tinted red, bump please help me cure this plant before its too late

i would check your humidity. I've never experienced mold personally, but there are a few threads about it floating around. Do some searching.

Sm 90 is good for alot of stuff ,check humidity and find the source of mold , like maybe an old plant in the house or dirty dishes lying about . Clean before you start to grow. this time of year , I dont think you should be having mold prolems . Your homemade compost might be the souce.