Burned tips, yellowing on plants

Attachment 291006Attachment 291005

First post so be gentle. I've filled out the form below.
I've had few problems in the past but this time around getting some really strange stuff for me. I have pictures of 2 plants, but from same seeds and treated the same. The one has the burning, the other has a bit of the curling/canoeing but this just started and might be from me adding extra pH in last watering to try and attack plant #1. I have a third plant that looks even worse than #1, so I'm willing to do drastic experimentation on that one.

Suggestions?

What is your experience level? (first timer, novice, experienced...) between novice and experienced. I've been growing for about 8 - 9 years.

Your Equipment:
.1) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's) Fluorescents. A set of 4 24" in an overhead hanging fixture, 24 watt T5 6500K, two 48" T5 fluorescents vertical on the sides 54w 6500k
.2) Distance from tops? 4 - 6"
.3) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...) enclosed reflector for overhead, bare bulbs with clear covers on verticals
.4) Is there a consistent fresh air supply? yes
.5) Do you have an exhaust fan and a circulation fan? a circulation fan that blows across the overhead fixture
.6) What are the bulb wattages, kelvin ratings, and schedule? 24w 24", 54w 48" 6500k 18 on 6 off

Your medium:
.7) Specific brand and type of soil, (coco, peat based soilless...) and anything you've added to it. (vermiculite, perlite, worm castings...) Fox Farm Ocean Fresh nothing else
.8) Size of container. 5 gallon for each plant
.9) Did you use peat pucks (or similar) to root clones or germinate seedlings? germinate seedlings

Your nutrients and water:
10) Source of water? (tap, bottled or filtered) What's it's ph before adjusting? filtered tap. Water is about 6.5 - 7 after filtering
11) Method of checking water ph. (ph pen, test strips, aquarium test kit...) General Hydroponics pH control kit for checking and adjusting
12) Method of adjusting water ph. (phosphoric acid, white vinegar, hydrated lime, PH Up...) General Hydroponics pH control kit for checking and adjusting
13) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. B'Cuzz A and B 3-0-3 and 0-2-4 respectively for growing, B'Cuzz 0-13-14 for flowering stage 1-2 mL per L. Feeding only after a couple weeks of being in new soil. Watering when soil is dry or minor drooping occurs. I also check with a soil moisture meter
14) How often are you watering between feedings, and how much per watering? As above
15) Any additives or tea's? (Superthrive, CalMag, molasses, Mother's Earth...) CalMag during flowering
16) Are your ph levels stable, or do they fluctuate? pH is pretty stable
17) What is your ingoing water's ph? ...your runoff ph? Ingoing 6.5 - 7. Outgoing I just checked and was about 5. This seems normal (?) for FFOF.
18) Do you foliar feed? If so, with what, how often, and at what time do you spray? no

Your growroom:
19) Indoors or outdoors? indoors
20) What size of closet, room or hut? room. 10 feet by 20 feet for room. area for growing is about 4 feet by 2 feet, lots of air. laundry room with air handler for heat pump in room.
21) What are the temps and humidity levels while lights are on? ...With lights off? lights on 80 degrees tops at 35%, off 72 - 75 and 30 - 45%.
22) Have you seen signs of insects in the growroom? No

Your strain:
23) What strain are you growing? (Indica dominate or Sativa dom?) BC Bud Blueberry feminized mostly indica
24) From seeds or clones? seeds
25) Is this an autoflower strain? no

5 is too low for ph in soil. and my experience with foxfarms soil is that its nuclear hot and has a half life of about 6 months. my runoff is at 6.5 and usually is especially new soil. the ppm tho is well over 2k and stays high. the plants i have now were started in it from germination. i still dont need to add much more than a little calmag and now that theyre flowering ive added a tiny bit of big bloom and tiger bloom maybe at a 10-20% of the suggested ratio. the runoff is still above 2k so no need to add main ferts.
try flushing them, and only give them water and maybe calmag for a bit to see if it clears up then you can readjust your feeding schedule. id get rid of the drops for ph and get a meter that will also give you ppm.

oh and gold star for the day for having the form filled out!

;)Good job on the form:thumbsup:;) I'm impressed

Agree with Mal, tips are fried cuz your feed is too hot. Scale back after the flush, IMHO?

Sic Semper Tyrannus

:abduct:

Thanks for the quick answers. I'll do a flush and move on to water only.

After a flush, would you suggest adding any calmag to the water?

What kind of meters do you suggest for pH along with ppm? I'm not familiar with the ppm measurement, I'll do some additional searches on that.

I'm a troubleshooter by trade, so I fully understand needing as much information as possible. Filling out the form made sense! I'm glad to have it available. Thanks for the kudos.

Like all of the gadgets out there but personally go with my gut instinct. Purchased all of them, meters etc... Used once & in the closet they go, that's me. You'll find there's a lot of ways to do stuff & will receive a bunch of help here so don't fret. Keep an open mind & update. Peace

Sic Semper Tyrannus

:thumbsup: