yeah i'v got some pro tek. but i used it sparingly until i was for sure about it. my plants were wilting when my room was to cold. even when my closet temps were right. so i bought a little heater and they perked back up.
yeah i'v got some pro tek. but i used it sparingly until i was for sure about it. my plants were wilting when my room was to cold. even when my closet temps were right. so i bought a little heater and they perked back up. somone on here will know what to tell you. but i think flushing cant hurt.
I use dyna gro myself. I was having the same problem that you appear to be having.. Changed my resevoir and in a couple days I saw improvement. Try using about a half teaspoon next time you had your nutes. Not sure if hat will help with your problem but it has mine. No roubles since I sarted mixing my nutes a little weaker.
could be from too much heat? Light too close maybe? Do you have a fan going?
It looks like nute burn to me but another factor could be your light position.
Water temp and level is important. How do you control water temp?