Mg/Lockout or Fungus How do you tell?

[Grooven420]

Hello,
I several plants that look very similar to what HarryRed's post on 9/23/2008 looks like. I am in week 5 of flowering and use Sunshine #4 soil mix with Fox Farm products(Big Bloom, Tiger Bloom, Grow Big, and the Open Sesame/Beastie Bloomz/Cha Ching products. 2 of my plants I believe really may be a pH balance problem as I noticed that my water went from being around a 7 to down around a 5 for some reason. I thought maybe the water company switched which reservoir they were using or something. Regardless, I the water pH and soil has come back to ~6.8 and I am seeing some recovery on the 2 plants that were heavily affected. I am starting to see signs on my other plants now though which has me concerned that it may be fungus.

My Question: Is there a way to tell if it it Mg/lockout or if it is fungus?

Thanks!!
Grooven420

 

[McBudz]

Most likely you are experiencing lockout if your pH went that low. You should be monitoring and adjusting your pH each time you water/feed regardless of what your tap water reads. It should always be adjusted so your runoff is somewhere between 6.3 and 6.7.

 

[Grooven420]

Hey McBudz,
I am assuming that is the case also but is there any sure way to tell if it is fungus vs. lockout?

Thanks,
Grooven420