HELP! clones in trouble

Clones are were healthy, and today they look like this. Distilled water, no nutes. (Just fed them some nutes today (lucas) 1/3 strength w 6.0ph, 0ppm r/o water in PROMIX BX. Only appears on new growth apparently and my other babies are showing similar beginning signs as well. (White dots on new growth in the middle near the veins).

Here is more info

68 F, 45% Humidity, 8 T5 Lights (Only luke warm directly under the lights). These are Purple Kush, growing pretty fast in veg.

Transplanted from Rockwool about 1 week ago. And only fed lucas ONCE at 1/3 str.

I can see roots near the cup drainage (they grow roots fast), I will probably flush and then transplant into 1gals alittle later.

Im thinking it maybe a PH problem?

Im going to flush tommorow, and put in straight 6.0 r/o water 0 ppm. Since its PROMIX BX, should I up the PH to 6.5?


Anyone know what this problem is caused by?
I think they first start off in new growth as white dots, then appear as in the pictures (white with rust).

They seem to be healing up alittle, anyone know what caused this?

I flushed with 6.0 R/O 10ppm with superthrive.
They appear to be healing up and exploding in growth now. Still not sure what caused this, I thought it was the PH but the runoff was 5.8.-6.2 PH for all but 2 plants, which were around 5.7 and 6.3. I will be transplanting tommorow as roots are growing out of the bottom.

Nute deficiency was ur problem. As soon as clones are fully rooted they can be fed full strength nutes. I use Lucas formula (8/16 ml per gal) full strength the day they are fully rooted. Its not like a seedling, a clone has the genetic material of an adult and can be pushed to grow right out the gate. I consider a fully rooted clone a clone that has about ten roots an inch long coming off of the stem.