DWC Problem.

72 for res temp is a bit high, should be under 70 at all times. Mine stay between 66 and 69 and only once reached 70, you might want to try and either get more air flowing around your buckets or covering them like me with the white/black backed plastic to avoid the black pulling heat into the res, its almost like a bib on my buckets lol.

My plants are about 3 weeks old now and I had the same thing appear, in my case it was nute burn. I put in a recommended dose as well for seedling, when really i should have done 1/2 to 1/3 of the recommendations. I did a res flush and change, then topped up with 1/3 nute recommendation and the spots stopped appearing, the old leaves are damaged and cannot come back so i cut them off so the plants stop trying to repair them.

Problem with nutes and recommendations in my experiance is every strain is different. i have 2 automara II and one Senis Star, the automara's took the recommended nutes with no issue but the seni got these same spots.

By no means am I an expert but my plant showed the exact same thing and the flush with a reduction in nutes fixed it.

I think going forward for me its always best to start low with them and very slowly move up 100ppm or less at a time with each res change

Other then the spots your girls look great! I hope this helps you and your girls!

looks like it could be something splashed on them also.

looks like wind burn to me

Originally Posted by StealthOne

72 for res temp is a bit high, should be under 70 at all times. Mine stay between 66 and 69 and only once reached 70, you might want to try and either get more air flowing around your buckets or covering them like me with the white/black backed plastic to avoid the black pulling heat into the res, its almost like a bib on my buckets lol.

My plants are about 3 weeks old now and I had the same thing appear, in my case it was nute burn. I put in a recommended dose as well for seedling, when really i should have done 1/2 to 1/3 of the recommendations. I did a res flush and change, then topped up with 1/3 nute recommendation and the spots stopped appearing, the old leaves are damaged and cannot come back so i cut them off so the plants stop trying to repair them.

Problem with nutes and recommendations in my experiance is every strain is different. i have 2 automara II and one Senis Star, the automara's took the recommended nutes with no issue but the seni got these same spots.

By no means am I an expert but my plant showed the exact same thing and the flush with a reduction in nutes fixed it.

I think going forward for me its always best to start low with them and very slowly move up 100ppm or less at a time with each res change

Other then the spots your girls look great! I hope this helps you and your girls!

Thanks for the input Trying to come up with a way to cool the rez...Was thinking about frozen water bottles in the rez.

Originally Posted by UnderCurrentDWC

looks like wind burn to me

Could be. I have two fans on her.

I also think it could be wind burn. Those markings will usually appear on the plants closest to my oscillating fans.

Originally Posted by problemsolver

I also think it could be wind burn. Those markings will usually appear on the plants closest to my oscillating fans.

I hope so Are they ok at this point? Should i leave them alone?

I use AN Ph perfect 3 part, too. I found that you don't need to run it at full strength. Presently I'm using it at 2/3rd strenght, and the plants are loving it.

And just in case you didn't know... when making the nutes, add the micro first, then grow, them bloom. It has something to do with the way the solutions balance the Ph.