what could be wrong?

[jimmie]

clones have been in veg for 2 weeks
my ph is 5.6
total ppm 1000
10ml pbp grow
5ml liquid karma
my tapwater is 350
total gals 20,this is a dwc system
i top off with ph adjusted water
i was planning on going 15ml per gal trying to use lucas formula

 

[killa-bud]

sorta looks like a calcium deficiency,not sure tho...

 

[ibjamming]

Are you SURE the ph is right?

 

[Weedhound]

Are you using tap water and what is the ppm of it? Also, yes, have you calibrated your meter recently?

 

[Review]

I agree it could be with wrong ph and calcium deficiency both can be right..calcium is the best absobrb in hydro with ph 5,0 - 6,0. Under 5,3 can create deficiency of calcium.

 

[Weedhound]

tapwater 350........Have you grown successfully with the same water before? I ask because in some cases too much of one nute or mineral can lock out another. 350 is pretty good hard water. You may want to consider an alternate water source such as RO and CalMag. That's just a guess but if your ph is correct an/or the light isn't burning them or something, then that's where I'd go next.

Good luck.