Help sick plants!

[mjlover]

Hey guys I'm new to this site. Im having issues with my current grow. Ive had successful grows in the past with very little issues (maybe some cal def towards end of flower). I was growing Super Silver haze from Mr nice and Barneys Critical kush. I ended up with powdery mildew and salvaged the crop but lost the genes. I know am growing Dinafem Cheese and reserva Privada Seeds silver Kush.

My two mothers where absolutely perfect but became to big so I cut them down. I was at 600ish ppm on hanna meter. Ever since i i took clones its been a struggle to keep them looking good. I don't know whats going on. Ive flushed and started back with little nutes .8 ec and they became way worse. Ive added Calmag plus thinking it was cal or mag defiency. I've also tried some pk booster from humbolt. and also mag from humbolt

I was planning on using nutes from a new source ( can't think of the website now) but was starting to see issues so i diverted back to FloraNova.

I just added some more Grow to the rez when I took these pics but before I was around .9 ec

I just started using EC vs ppm and was reading lots of info on the internet about starting at .8ish and finish veg around 1.2 and flower around 1.6-1.8

As of right now:

2k lights

Grow 1.8 ml/gal
calmag plus 5ml/gal
Temp 79 day 69 night
rez temp is 19.4 C
humidity 40% day 50% night

Just check:
5.8
1.07 ec
775ppm (hanna 9813-6 meter) which i'm pretty sure is on .7 scale

I'm embarrassed to post these pics since i've been doing this for years but I desperately need some help. Thanks in advance

 

[mjlover]

Just saw the plant infirmary section. Mods can you move my thread?

 

[WifiSeedsPlz]

I would try using a product specifically meant to help get rid of salt build up(flush 3X the volume of the pots for safe measure) with one of these products added to clean water, then start with a new batch of nutes. Salt build up can mess with nutrient uptake. Also keep in mind that too much of one nutrient can block the uptake of other nutes. Is your PH staying pretty stable? Or does it tend to fluctuate pretty bad throughout the day? Remember that you can fix plants not having enough, but adding too much to your rez is harder to bounce back from. Flush the crap out of them then start with 1/2 strength nutes, give it a few days and if it doesn't improve step it up to 3/4 strength nutes.