Help spots on leaves!

[420kush5900]

Yellow on edges of leaves

 

[ISK]

a few more details and pic's of the overall plant would help....without additional info, we would only be guessing.

might be the start of a cal-mag def.....but that's just a guess

 

[Nugachino]

Also. Do you water with the lights on?

 

[420kush5900]

a few more details and pic's of the overall plant would help....without additional info, we would only be guessing.

might be the start of a cal-mag def.....but that's just a guess

Thanks over all they look good to me after doing some research I think it night be nute burn the last time I watered them my ppm was at 500 my feeding chart says it should be at 1300 for this stage I added more nutes ended up at 900 I didn't want to over do it but I think I did

 

[420kush5900]

Also. Do you water with the lights on?

Yes I do