#ph

I am having an issue getting this strain to 100% health. The White Widow strain I am growing in the exact same conditions is looking perfectly healthy. Any idea as to what the problem is? I have some suspicions: Fungus Gnats (I have a lot of them and have been trying to get rid of them) PH...

So I have a plan with using promix as a base let me know if this is good : (My tap water is >8.4 so My options as far as organics go is to either put sulfur or epsom salt in my soil, citric acid in my water, or see my rain water ph) Organics: Promix walmart pack(90%peat, lime,perlite...