BROWN SPOTS AGAIN

[Waira]

- how close are the lights mate? it looks strongly top affected, but long term, enough to have spread downwards,..... it sure looks like Ca defc., which doesn't correct/repair so look for halting of progression... LED is notorious for this, and maybe that light is behind this in part at least, close proximity can amplify the problem, so does the low RH% which crews with transpiration (VPD, vapor pressure deficit; read the nice article on this in reference, it will connect some grow dots )....
Don't go crazy with the Ca-mg either, more is not better, and it's not hard to go too far and start to cause a sort of toxicity issue that makes the Ca and Mg interfere with the uptake of both each other and other cations, but not cause the typical burn symptoms,...
:smoking: @blue knew this already, she just likes to make me work harder!

 

[rick-j]

- how close are the lights mate? it looks strongly top affected, but long term, enough to have spread downwards,..... it sure looks like Ca defc., which doesn't correct/repair so look for halting of progression... LED is notorious for this, and maybe that light is behind this in part at least, close proximity can amplify the problem, so does the low RH% which crews with transpiration (VPD, vapor pressure deficit; read the nice article on this in reference, it will connect some grow dots )....
Don't go crazy with the Ca-mg either, more is not better, and it's not hard to go too far and start to cause a sort of toxicity issue that makes the Ca and Mg interfere with the uptake of both each other and other cations, but not cause the typical burn symptoms,...
:smoking: @blue knew this already, she just likes to make me work harder!

Thank's, I like the way you & blue work together! I freak out toooo much, i'm getting ready to feed her,thanks for the pro opinion, that helps a lot.. I will take it easy on the cal-mag. Happy Growing--25" for the lights--