Magnesium deficiency??

what do you guys think? i'm thinking it might be magnesium deficiency? if so, what's the best method to fix it? i'm doing hydro rdwc. Thanks guys

I would say K def.

now i'm thinking it might be zinc deficiency. here's a pic i found online with zinc deficiency.

BBYY said:

I would say K def.

Click to expand...

I agree with this diagnosis.
Could be natural, could be heat related, could be high pH related, could be an excess of competing elements like calcium, or magnesium.

Actually, it looks kinda resolved. If the problem isn't getting worse by the day then I wouldn't do anything drastic.

hey thanks guys! the thing is my ph is perfect 5.2-5.8. can't be heat stress cuz i got the light 2ft away from the top of the plant. i am using ro water with no calmag. maybe that's y? thanks guys!!

anyone else have an opinion? thanks again!

Work on the pH. The 5.2pH is most definitely not "perfect."

Somewhere between 5.5 and 6.0 is the range to be in. As close to 5.8pH as possible all the time would be better. Mix your nutrients 24 hours in advance to give them time to rest and balance. Don't run an air stone in the pre-reservoir before adding nutrients to the main rez.

I think the pH is probably the thing to balance out here. Adding or subtracting elements won't fix anything if the 5.2pH is the problem.