At what TDS/EC do you feed at ?

Chris323

Well-Known Member
Just looking for some general opinions.. checking the runoff of my seedlings ( 3 sets of true leafs ) and its coming out at an average of 430ppm ... at what PPM or EC would you feed at again ??

Peat moss and pearlite mix .. ph going in is 6.3 and runoff shows 6.0
 

Pinworm

Well-Known Member
I usually hover around 600-700ppm during flower. Only a bit lower during veg. I've tried pushing all the way up to 1200-1300, and wound up with the same results as I did running at lower strength. The only difference was I had to deal with burning, and lock out issues.
 

GroErr

Well-Known Member
I usually hover around 600-700ppm during flower. Only a bit lower during veg. I've tried pushing all the way up to 1200-1300, and wound up with the same results as I did running at lower strength. The only difference was I had to deal with burning, and lock out issues.
Almost identical observation here using similar medium, I've run from 500-650 and noticed significantly more tip burn at 650ppm, 600 seems to be a happy balance for most strains I've run in this type of medium. I've seen people mention ppm's in the 1000's and to me it seems like a waste of money and make-work program dealing with associated issues.
 

kiwipaulie

Well-Known Member
I run up to 1.3 EC in veg and then at flowering peak ie 5 weeks I'll hit 1.8 EC and then start to tapper off before harvest.
 
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