Yellow viens

[boxxboy51]

What type of deficiency is this ? Should i be worried Search around can't find the reason for this I thought it was nitrogen because only my older leaves doing this

Grown in soil mid flowering got about 3 to 4 weeks left using 300w led ph runoff 6.4 they just got a dose of maxibloom 1 tsp with 1 tsp Epsom salt mixed with tap water

 

[Waira]

Good call mate, on the epsoms and Maxibloom... there's more than one thing in play here, including some normal fading of lower fans,... but the color fade overall, particularly at the mid-level to tops (worst), usually that's a sign of S defc.; on the top leaves, are there any spots? I can't quite tell, but it looks like there's some purple-red color starting too (petioles as well?), could be early P defc.... at this stage demand for P, K Ca, Mg is elevated,...often see micronutrient defc.'s kick in too,... So, you've covered the S and Mg with the epsoms-- that's 1tsp/gal? The Maxi' should cover the other stuff,.... As for pH, 6.4 is good, but technically, without knowing what it was going in, it's not a valid reading; a calculation needs to be made to be sure... I dislike the run-off method for it's many potential sources of measurement error, but here's sticky article on a procedure that helps eliminate some of this -> https://www.autoflower.org/threads/...-for-run-off-testing-and-ph-estimation.41733/
....ultimately, the best way to measure soil pH is directly in-soil, with a probe; Accurate 8 makes a good one for the money! ...Well, it'll take a few days for things to get in there and working, so meantime, watch to see if the symtpoms stop progressing,... likely, most of it won't reverse, it's halting that's important,...

 

[boxxboy51]

Ph goin in is 6.4 and comin out 6.4 and here's a top view of the plant

 

[Waira]

..well, that's a green light on the pH, so let's see what the nutes do,... BTW, have there been any cool spells in the room? ..like in the 5-'s?....

 

[boxxboy51]

[emoji106]..well, that's a green light on the pH, so let's see what the nutes do,... BTW, have there been any cool spells in the room? ..like in the 5-'s?....

not at all temps read from 75-82 on a bulb thermometer and the digital meter couple days ago my buds use to have a lil smell to it now it smell like grass/chlorophyll i did flush also prior to given nutes