Is this a ph Problem? im Stumped Please Help

This is my second grow. My first grow had this same problem first 3weeks of veg evevything was fine.the 4th week all hell broke loose. Was told it
was to much nitro couldnt repair so I started over
New dirt,new clones.made sure I didn't over feed and didn't use any amendments.and problems still there.if any one can help It would be awesome..pics

Isaac, I have same problem, it's on here from couple weeks ago. I don't have a clue yet. We use grodan cubes, H&G nutes been using em like this for a while and never seen this before. I'm thinkin water's too cold but it didn't happen last winter. Mine was like yours then it got worse, like trash. Hope you figure it out, tell me.

Isaac, What are your temps? 1st clue is it only happens on the new growth on top.

issacp said:

This is my second grow. My first grow had this same problem first 3weeks of veg evevything was fine.the 4th week all hell broke loose. Was told it
was to much nitro couldnt repair so I started over
New dirt,new clones.made sure I didn't over feed and didn't use any amendments.and problems still there.if any one can help It would be awesome..pics

Click to expand...

aaww man..... im the shit!. i was looking at youre pics in my "doc" mode and im like that looks like a calcium def....... not a nute burn....but i dont like ppl who give bad diagnosis and so i check the sticky ..a guide to nutrient deficiency toxicity ... right here on this same forum...were on,. (.you also may want a good organic compost mix it 25% pearlite get you sum batguano) ...and you in there
.if you ask me ....but, check out the sticky

I use pro-mix bx soil gen-hydro nutes at 1/4 recomended dose temp arond 68/69

Temp around 68/69