Not even. House and Garden A and B, never went higher than 900ppm in veg and then used water from the well for the last week to two weeks depending on which tray it was. Our yield varies depending on how big/healthy the plants are when they go in. We've had a bunch of tiny fucked up plants yield .5 under a 1000w and we've had up to 3 under two 1000w.
for sure, i was just speculating based on the leaf tips that are burned pretty bad in the pic you posted, nug looks good the tips just kinda jumped off the page @ me.
am i reading it correctly when you're saying you never went over 900ppm in veg? or was that the peak ppm throughout the duration of the grow?
the 1.5# mark seems like the top side of yield potential for the cooks imho.