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So a fail in coco and success in hydro in my dept.

Findings so far are in 2ft nft tanks mars 109 watt veg , 2x mars sp150s flw... keep feed low..in veg usually start at 0.4 for rooted cuttings up to around 1.0ec max then up to 1.2 ec one week b4 putting them into flw, Then gradually up ec to to 1.5 .. 1.6 max week 6 or if needed earlier to...

Yep same... and I was in worse trouble than that in coco, 2.3 run off, I figured it was a salts build up and flushed, ( I got away with it) ..gone back to nft now for more control on the ec and ph and loving v+ b..im running at 1. 4. - 1.5 1st week in Flw. 5th week..ph staying stable at 1580...

Im not questioning your results, its just that your ppm/ ec levels are way higher than on the hr feed schedule. pretty sure ive been underfeeding...(light brown leaf tips) and lost first fan leaves...( looked like phospherous defficiency...) in not too fussed about them as I train them. I've...