No idea what's going on here

[JollyShaman]

Hey y'all, first post on ICMag! I've grown in the past, but it's been a while and I really upgraded my system this time. I've never seen this before so I thought I'd reach out for some advice. My leaves are looking limey-yellow with redish-purple tips and spotting.

I'm growing a 2' x 2' x 4' tent with a 200W LED, vented with a thermostat/humidistat controller. I'm trying out Barney's Farm Wedding Cake and Purple Ayahuasca, and got the seedsman White Widow and Bruce Banger as freebies so I popped one of each. First time growing all of these so I'm learning what they like.

Doing it in 1 gallon fabric pots with a soil mix made of compost, coco coir, vermiculite and perlite. My soil mix was a little hot so we fought some nitrogen toxicity in the early stages (I think), the Wedding Cake was the most effected and was majorly stunted. I'm going to mix it down with some peat moss for the next round.

To keep the girls short I tried some manifold training (1st time) and did a little defoliation to let the light through to the lower bud sites. The plants are about 13" tall and 19" from the lights.

Room conditions are like this:
Daytime Temps - 78 F - 82 F
Nighttime Temps - 64 F - 68 F
Daytime Humidity - 46% - 55%
Nighttime Temps - 54% - 60%
Light Schedule - 12/12

Watering every 2 days
Feeding 1/4 cup of the following solution each watering:
1 Gallon Batch:
12 mL BioCanna Bio Flores
10 mL BioCanna BioBoost
5 mL Natural Cal-Mag
2 mL BioCanna BioRhizotonic
pH'd to 6.5 - 6.8

We're about 28 days into flowering now and I'm seeing some purpling on the leaves of all but the Wedding Cake. I think it's some kind of deficiency, but I'm not sure if it's from too little nutrients, lockout, or what? I've increased the feeding to 1/2 cup last week, then 3/4 yesterday after no changes.

The plants don't look too stressed, but I'm worried that's gonna change soon. We only have 4 or 5 weeks to go so I can't be losing leaves this late in the game.

Some pics are under the LEDs, I took some more outside the lights for better accuracy. The red/purple doesn't show up nearly as well in the photos as it does IRL, should I be worried?

The girls under LEDS:
View attachment pDRwStl_ojW1kbJlOqtrwPel3oE6xgipZnI5bDo_XTVkAnwydzwT7Gb83OA3qYe6g6m75UHcYHfg1TfB9J5nsCVQyQWJrEXfexl0 LED

Wedding Cake:
View attachment W0CxaTVF-pDVPg45RwHPL0bqRc80iDWIFIK-8Z0Hlj6ih_GDsBHGLHKpLnQ-dyc-tPsH2o8hbNXPzFOdNJKIVhc_4WopJ7FoQAC- LED

White Widow:
View attachment lGZBYjmNZl7ne087hWQtfFyQNYUwalGlFkya09dSyZZpPU7gm0IG2Ef6fc8q-pNC5VkRl7TfiWTfyuGrKGvlt8kPibE2Pe0JVCuZ LED
View attachment pT9RSGnoS4ybZmEqTv9iGNquG7JwZuxv5rywMGP6LUbbKCG_AdKrU73uxyMAncLBiK_gN5mzG2CxVrpwsiuKKy5yN1t08mND4IEq LED
View attachment 1gEjYci2ijNKubkZINqnHqSPa3_znsmbCQzXQ7kFgDNGZGrXe57Vt-rMBmidNNDtFFLGFoyEHiIWcrmHie7rRbfnsN1EWyJjGL4d Camera Flash
View attachment 5eTI0TRma4yf5wYseY7-YzKS-3iSW4v4M7sEK7Lk1OZfrxTU2dW2Fcrvj9UIes2G9cotoIVE8OxkYcT8UJgREbW-5hmhnB45CpaM Camera Flash
Bruce Banger:
View attachment cIjyduhmt-pLLFult6odMFSCT4Bvsmrx8Y1Nbgc3rYS6FhT1jXMQ1VLNn7O_NL0476zv7abgGUnpBRdv6iFqXQb7hM5Osbe1I_iG LED
View attachment 4golkjqRo1Duq1t_rucBXsAnLkpQuyfroKJmPeIIgS45OBf_q5JSoD6M1TP7c275VoCaqaT_Ufi5ARTpdMzoK7YpEnBHtwvtYf3s Camera Flash
Purple Ayahuasca:
View attachment vAtX8yoRAHZtdTrZjzwflad8xrVF9rxuLfJUo1q32fz-sWXL5n2xarYii92NDnG9GCDO2uyk1mlOsT6aRmMRqJVYQLsPHumiPMZ7 LED
View attachment JoHmXIxMoP4C6ou6xaHqA2qNC472WdAgwUuzj5oQbOktGCOFL2fd7X8Ou-wI0gos8RaX6fjiYSfOLx-bWp9q1f3lW9fdcbQT9RfZ Camera Flash

 

[Creeperpark]

It looks like a water issue from using tap water. Tap will raise the pH after a while and cause lock out.