ok so yesterday after i flushed my plants the ppm in the res was at 225, i did another flush today with clean water and now the ppm is @ 270. anyone fins this strange? Both times the water was @ 60ppm before i added it to the system.
here are some updated pics
try using distilled water next time and see if you get a spike.
tap water can vary in 'nutrient' levels by week, so i think its that...
perhaps boil your water first, and try that.
Do NOT use boiled water. It is to high in ppm. Boils off the water and leaves solids.
Flushing will flush the nutes out of growing medium .... and will so up in res.
+sub
Looking good man, Time to start packing on the weight.