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Ph dropped from 7 to 4.7 in 3 days!

Lightning182

New Member
I transplanted my 7inch clones from Dixie cups from the club to fox farm soil, I watered them with purified water, until it came out the holes at the bottom, outa a 5 gallon jug bought new at walmart. The waters ph is a perfect 7, my soil still in the bag is a perfect 7 but after only 3 days the ph in both pots has dropped to 4.7! Any ideas?? Anything would help.

My light is a 150watt placed 20in above the tallest plant. My room is good temp at 77f with 40% humidity.
 

Lightning182

New Member
It says on the box for soil and my buddies use the same one. Anyways it's all good now, time came to water again, the next day after watering everything was good, both pots measured 6.3to6.5. Do u measure water run off with the strips?
 
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