K def?

CannabisMingus

"Russian warship, go F yourself"
Cultivators Club
Joined
Mar 10, 2020
Messages
2,473
Reputation
2,967
Reaction score
9,573
Points
0
Currently Smoking
Dabbing Sour Stomper
I'm thinking K def but it also looks like possible beginning stages of interveinal chlorosis (Mg). Looking light green anyway so my plan is to bump up to 550 ppm (3.5g/G + .5g/G es). Just making sure that sounds right.

Problem: yellowing of leaf tips, possible interveinal chlorosis

Medium/grow method: DWC- 4 G res.; pH 5.8-6.0; 450 ppm; Hydroguard; fulvic acid; kelp

Feed: and supplements used: MC (1 part) at 3.5g/G plus .5g ES - diluted to 450 ppm

water source: RODI (5-10 ppm)

Strain/age: Meph AvT - day 13

light used: Mars FC3000 - 290w

Climate:
72% RH, LST 77-79F.


20210909_150245.jpg
20210909_150241.jpg

20210909_155049.jpg


Shoutout to @Waira @Mañ'O'Green
 

Attachments

  • 20210909_150250.jpg
    20210909_150250.jpg
    1,008.8 KB · Views: 6
Last edited:
With RO water you should be adding 75 PPM of Cal-Mag to the water first. Then mix in the MC @ 3g per gallon and .5g of Epsom Salt The total PPM should be around 615 PPM You don't need to dilute it.

Be sure to add the kelp and Humic Acid the day before you change the reservoir or you may get a bio-film that reduces the dissolved oxygen in the reservoir. Change that res every week!
 
Thanks @Mañ'O'Green. Appreciate it. Will add the CalMag. I'm solid on weekly res changes. Will report back.
 
Back
Top