Quote Originally Posted by Alexp
They are in FFOF with about 40% perlite.
I flushed them with 5 gallons each of 7.0 ph plain (tap unfortunately) water tonight and the runoff was between 7.3 and 7.5.
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Good call all around.
That 40% perlite is making your life a lot easier right now ya know!
IF your runoff is up to 7.5 flushing with 7.0 you still have major pH probs.
You are going to want to get your flush water down to 6.2-ish if you can. Even some cider vinegar to adjust will be better than nothing.
Yes, those plants look like they are unhappy with their pH!
Keep on flushing until your runoff is 6.8.