Week 5 flower cal mag deficiency

[Mattfromthelou]

So this is my first attempt at a grow. Everything's been smooth so far. Have 5 plants in a tent. Fox farm soil in 5 gallon smart pots. Using the dirty dozen nutrients with it. I also add a bud sweetener and cal-mag. Ph everything that goes in at 6.5 during flower. Did 6.3 all thru veg. Just did a flush with the sledgehammer and about 8 gallons ph water per plant last week. Got the ppms down between 200 and 400. Feed them nutrients and bumped the cal mag up to 2 tsp per gallon. But showing signs of bad deficiencies. Any ideas what the next move should be

 

[bobrown14]

Looks like maybe a pH issue - are you following the directions on the fertilizer stuff regarding pH?? Seems to be a bit high to me.

Looks like Nitrogen issue slight overall yellowing but not bad. You have fans going on plants best down on the soil line? Transpiration is key.

I wouldn't call that a big problem yet. That 1 leaf with necrosis the first pic usually a sign of pH and some sort of lockout starting but overall not that bad. Certainly not an emergency.

With all that extra stuff your going with in bottles you gotta dial it in. PH is very important.

Whats you water source and whats the plants roots growing in??

 

[Mattfromthelou]

I have an RO water system. Ph after I add in nutes at 6.5. Fox farm ocean forest soil. It's a 4x8 tent but only using about 5x4 of it. Box fan, clip fan, and ac all on the ground level. An oscillating fan and two more clip fans throughout the room. Inline 6 pulling hot air out.
It's been 5 days since I flushed. 2 days since I fed nutrients. The pictures are from today

 

[Mattfromthelou]

Have a Mars hydro ts3000 and a tsl2000 about 30 somthing inches above canopy. Homemade C02 bucket. Have my room at about 75degrees, 50% humidity.

 

[bobrown14]

Could be a negative reaction to flushing. Not sure why you did that. Its not helpful.

Just water only not pH changes needed you should be at 6.5pH with RO water??

See how it goes. I dont use fertilizer but I do know that there are pH requirements from all the fertilizer brands and they tell you specifically what those requirements are on the label.

6.5pH seems a little high from what I see others doing. Are you sure thats the proper pH for your fertilizer??

 

[Mattfromthelou]

Been following the fox farm soil schedule

 

[bobrown14]

Stay the course then if you're following the label recommendation for pH and you know your pen is calibrated properly.

PH measurement is logorythmic so a little variation is more than a little bit.

 

[Mattfromthelou]

Just checked on them and lookin good. Hopefully everything is good. Did a little more research on the fox farm site and they recommend the flush just be double what you normally feed. So I definitely flushed to much water thru it. Might be shock. I think they lookin better