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What is your experience level? (first timer, novice, experienced...)
4th grow, 1st time hydro (5 gal bubble bucket/dwc)

Your Equipment:
.1) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's)
150w HPS
.2) Distance from tops?
8"
.3) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...)
enclosed reflector
.4) Is there a consistent fresh air supply?
yes
.5) Do you have an exhaust fan and a circulation fan?
just a circulation fan, which also performs mild exhaustion
.6) What are the bulb wattages, kelvin ratings, and schedule?
150 watt, I think 2100K, and 18/6 (veg)

Your medium:
.7) Specific brand and type of soil, (coco, peat based soilless...) and anything you've added to it. (vermiculite, perlite, worm castings...)
hydroton
.8) Size of container.
6" net pot, fused into a 5gal bucket lid
.9) Did you use peat pucks (or similar) to root clones or germinate seedlings?
RW plugs for germination of seed

Your nutrients and water:
10) Source of water? (tap, bottled or filtered) What's it's ph before adjusting?
aged tap (24+hours), ~8.4 pH
11) Method of checking water ph. (ph pen, test strips, aquarium test kit...)
Milwaukee® ph pen
12) Method of adjusting water ph. (phosphoric acid, white vinegar, hydrated lime, PH Up...)
local hydro store ph down (phosphoric acid), GH ph up (potassium carbonate)
13) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule.
GH flora series, running Latewood's 1-1-1 veg formula, at 1/2 strength (4ml-4ml-4ml / gal.)
14) How often are you watering between feedings, and how much per watering?
no hand watering - this is dwc
15) Any additives or tea's? (Superthrive, CalMag, molasses, Mother's Earth...)
Superthrive 1/4 tsp./bucket
16) Are your ph levels stable, or do they fluctuate?
stable
17) What is your ingoing water's ph? ...your runoff ph?
bucket's ph stays between 5.5 and 6.2, but usually stable near 5.8
18) Do you foliar feed? If so, with what, how often, and at what time do you spray?
not yet

Your growroom:
19) Indoors or outdoors?
indoors
20) What size of closet, room or hut?
half of a closet, 3'x6'x8' (LxWxH)
21) What are the temps and humidity levels while lights are on? ...With lights off?
No thermometer - rely on the "hand test" for ambient temperature regulation and signs of heat stress via observable leaf tissue damage. Would guess ~80 for day temp, ~68 for nite temp. Humidity depends on weather -today was ~49%
22) Have you seen signs of insects in the growroom?
No insects. Saw one arachnid in the beginning (week 1) - was a tiny "jumping spider"

Your strain:
23) What strain are you growing? (Indica dominate or Sativa dom?)
LSD - indica dom.
24) From seeds or clones?
1 fem seed
25) Is this an autoflower strain?
no


Background - I'm at exactly 1 month today from one seed in RW plug. She is showing excellent progress with about 8 nodes - and I'm expecting to flower in 3-4 weeks. This is my first attempt with a hydroponics bubble bucket, but everything has been smooth so far *knocks on wood*. My city's water is good for hydro with an initial reading of 135 ppm.

Issue - On 2 of the lowers leaves, I've noticed a few light brown/tan spots appearing. It's only on these 2 lower fan leaves and I've only observed it today. I'll be watching for signs of development of the next few days.

Assumption - Reluctant on including this section, didn't want to persuade thoughts of "helpers". I assume it has to do with a Ca deficiency or Mg deficiency (or both). I cannot tell you level or Ca or Mg in my city's tap unfortunately.

If it is a Calmag problem, I do have growing-safe molasses. I was thinking this would help in the meantime

Any enlightenment on this situation would be much appreciated :stoned:

And for the pics....Hopefully by tomorrow - can't find my cameras transfer cord so I may have to resort to my cell.
DOUGAL25 Reviewed by DOUGAL25 on . Brown/tan blotches on leaves ----------------------------------------------------------------------------------- What is your experience level? (first timer, novice, experienced...) 4th grow, 1st time hydro (5 gal bubble bucket/dwc) Your Equipment: .1) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's) 150w HPS .2) Distance from tops? 8" .3) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...) Rating: 5