ADVICE MUCH WANTED**

[Scribble037]

Hello friends- Out of 20 of the auto-bomb plants that are just beginning to pre-flower, 3-4 are beginning to now show brown spots all over the fan leaves, and one is just beginning to show whitish-looking spots(pictures to show) can anyone with a good eye take a peek and see if this looks like nute burn? It's all in a 15 G. Bubble system so I just want a second opinion before I feel like a gotta change out all the water.

 

[cannabeans]

I dont grow hydro, but looks like burn to me.

 

[kushtrees]

That's a calcium deficiency. There's a few reasons this can happen so need to know more before I can suggest next step

 

[salmonslammer]

I hate too even bring this up because they are so nasty but root aphids can cause a problem like that check for them first!

 

[Kcar]

It's cal-def. Check your PH. If that's ok (5.5 to 5.9) then add some calmag