Any help with my girls would be greatly appreciated

****Apologies if I put pictures up wrong. It's late and my Ninja is kicking **********

On my second full grow. Indoor stealth, DWC system with 5 gallon buckets. Six buckets, one reservoir with pump and airstone. I use CFLS and have 18@ 42W each, all in the 2700k range. We're just starting 5th week of flowering, and I don't expect to harvest until another 3 weeks at the least.

My issue right now is the plants. I had some slime issues which appear under control with cold water and peroxide. All girls growing well and doing what they're supposed to. However I've got a few showing signs. Some could certainly be stress (I have to dig my hand into each bucket to be sure there's not a clog in the return line and I don't think they like it) but I suspect nutrient problem. Water ph is kept between 5.4 and 6.2, 5.4 being the ideal. My water has high ph so I never have to bring ph BACK UP.

Pictures: They're all producing, but have all been exibiting the same symptoms, Yellowing leaves turning to rush as they close on the bud site. I've not had a bud site "go down" but I'm starting to see orange hairs on some of them (and not the kind I would expect nearer the end of their growth cycle.)

I hope someone can shed some light on this for me
Stay Smooth!

I had a similar issue with 2 plants of mine, not so much of the yellowing like yours but the burnt edges slowly forming over the whole leaf... Apparently there was a build up in my soil, I flushed with gal of 10ppm distilled water and the run off was 2200+ppm... So I put 2 more gallons through it and brought the ppm down to around 300 with a ph of 7.0. The other plant same thing just a bit higher ppm's and a bit lower ph....

Maybe your problem is over fertilizing like my issue was?

Kind of looks like too much K, which can block out other nutrients pretty quickly. Happened to mine late in flowering I guess because of the high K in my bloom nutes. Looks like it needs a boost of cal mag and to cut back on the K.

Looks like someone needs some Cal-Mag desperately

Thanks for the informative replies folks! I've got cal-mag and always add it with each feeding but guess not enough. Good news is these girls are hardy!