Depending on the strain and other factors I pushed 1600-1800 PPM with a no issues for years with FN this was in a DWC system.. I just couldn't get the terps I was after but the everything else was 10 out 10 and I definitely stress strain bye strain as I had some that preferred around 800 PPM so...
I'm grabbing 2 of the 880w for flower room just got 6 new genetics so all new I will upload some pics l... Lights are on back order till end of March beginning of April I guess the word got out ...
Keep on growing.....
Much appreciated feed back...
I've had great success with STS in the past but recently heard a rumour that nano silver is even better and knowledge is key. Thanks fellas