DWC 4th week leaves w/orange spots Help!

[Crazyintel]

Ok so I just started week 4 from seed and a few days ago I noticed orange spots and before that I had 1 leaf tip that was curling down. I know this is a sign of some sort of deficiency but I'm not sure what to do... I'm using cornucopia X2 nutes and II've been on an 18/6 cycle... water temp 70s ppm registered at only 175 which I thought was really low. I changed my res every other week for the last 4 weeks. I'm thinking it's a total nute deficiency because the plant has used up everything in the res so far. I need help ASAP!!!!!!!! ORANGE seems to be spreading slowly also the tip of 2 of my leaves look like they're burning but it's orange/brown rather than yellow. Any help would be greatly appreciated

 

[Crazyintel]

Re: DWC 4th week leaves w/orange spots HELP!!!!!!!!!

 

[go4snypr]

Re: DWC 4th week leaves w/orange spots HELP!!!!!!!!!

i would suggest nute burn on the tips, are you sure your ppm is correct?? what is the water ppm starting with, how much nutes are you adding and what is the finished ppm after adding nutrients?? also a picture of the whole plant would help a little as well....

 

[go4snypr]

Re: DWC 4th week leaves w/orange spots HELP!!!!!!!!!

also looks like leaves are "clawing" might be be a bad angle though, but clawing is another sign of nitrogen toxicity...

 

[lendee]

Doesn't look all that bad but I agree it's light nutrient burn, remember RDWC uses less nutrients I run a 47 gal system and never go over 600 ppms keep the EC @1.1 or so.good luck.