HELP me so I can HELP my plants (with pics)

As you can see from the pics my plants need HELP...The problem is those brown spots on the leafes...First I thought it is an Mg problem, but is not.
How can I repair this mess. Tell me where i did wrong...sorry my englishAttachment 287553Attachment 287552Attachment 287554


What is your experience level? (first timer, novice, experienced...) FIRST TIMER

What type of hydro set-up are you running? HYDROGARDEN NFT

Your Equipment:
A) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's) HPS
B) Distance from tops? 1 METTER
C) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...) COOL TUBE SET-UP WITH 1.25m REFLECTOR
D) What are the bulb wattages, kelvin ratings, and schedule? SUNMASTER HPS 600W DUAL SPECTRUM, 18/6
E) Is there a consistent fresh air supply? YES
F) Do you have an exhaust fan and a circulation fan? YES
G) Size of reservoir? 90 L BUT FULL WITH 65 L
H) What medium if applicable. HYDROTON (CLAY PEBBLES from PLANT!T)

Your nutrients and water:
I) If using rockwoll for clones or seedlings, did you rinse the cubes well, with properly ph'd water?
J) Source of water. (tap or filtered) What's it's ph? FILTERED WITH OSMOTIC FILTER 7.12 pH
K) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. CANNA AQUA VEGA A+B, 6.3.8, 2ml/1L
L) What is the ec/ppm of your unadjusted tap (or filtered) water? 0
M) What is the ec/ppm of your nutrient solution? EC-1.5-1.6 (Down you 'll find all my schedule)
N) What is the temperature of your nutrient solution? (reservoir high and low temps) 18-20C
O) Does your ec/ppm show a rise or fall when you do your daily PPM check? YES
P) Does the ph fluctuate? YES
Q) Do you foliar feed? If so, with what, how often, and at what time do you
spray? (Just after lights come on, just before they go out...) 1. DISLIKE 1ml/200mL WATER/WEEK 2. CARBONATED WATER TWICE A DAY WHEN LIGHT GO ON AND AFTER 4-5 HOUSES
R) How often do you replace reservoir water/nutes? What does it look like before changes? (clear, foamy, green, brown...)ONCE IN TWO WEEKS

Your growroom:
S) What size of closet, room or hut? 3 METRIC CUBS
T) What are the temps and humidity levels while lights are on? ...With lights off? WHEN LIGHT ON 23-25C / 38-55%, WHEN LIGHT OUT 18-20C / 60-75%
U) Have you seen signs of insects in the growroom? NO
V) Are the roots long and white, or brown and slimy? LONG AND WHITE

Your strain:
W) What strain are you growing? (Indica dominate or Sativa dom?) WHITE WIDOW AND GREAT WHITE SHARK
X) From seeds or clones? SEEDS
Y) Is this an autoflower strain? YES

Here is my feeding schedule:

DAY 1.

19.00

Add: 130ml Aqua Vaga A + 130ml Aqua Vega B + 65 L water

Ec - 1.1
PPM500 - 550
PPM700 - 760
PH - 6.3
Water temp. - 19C
Air temp. - 23C
Humidity - 43%

01.16

Add: 10ml NITROZYME

Ec - 1.1
PPM500 - 560
PPM700 - 780
PH - 6.1
Water temp. - 18C
Air temp. - 24.5C
Humidity - 45%

10.28

(1.5 hours befor light off)
Add: 1ml Dislike/200ml water, sprey over plants

Ec - 1.1
PPM500 - 560
PPM700 - 780
PH - 6.3
Water temp. - 19
Air temp. - 23C
Humidity - 40%

Day 2

18.00

Ec - 1.1
PPM500 - 560
PPM700 - 790
PH - 6.3
Water temp. - 18
Air temp. - 25
Humidity - 40%

Add: 2ml A+ 2ml B, 2.5l water

Ec - 1.1
PPM500 - 560
PPM700 - 780
PH - 6.4 -----6.0 (2ml pH -)
Water temp. - 18
Air temp. -
Humidity -

00.11

Ec - 1.1
PPM500 - 540
PPM700 - 750
PH - 6.1
Water temp. - 18
Air temp. - 23.6
Humidity - 38%

10.14

Ec - 1.0
PPM500 - 520
PPM700 - 720
PH - 6.2
Water temp. - 18
Air temp. - 24
Humidity - 38%

Add: 8ml A+ 8ml B + 2.5l water

Ec - 1.1
PPM500 - 550
PPM700 - 770
PH - 6.0
Water temp. - 18
Air temp. -
Humidity -

Day 4

19.44

Ec - 1.2
PPM500 - 580
PPM700 - 790
PH - 6.0
Water temp. - 19
Air temp. - 24.5
Humidity - 47

23.36

Ec - 1.1
PPM500 - 570
PPM700 - 800
PH - 6.0
Water temp. - 19
Air temp. - 25
Humidity - 45%

Day 5

18.30

Ec - 1.1
PPM500 - 580
PPM700 - 790
PH - 6.0
Water temp. - 19
Air temp. - 25
Humidity - 40%

Day 6

19.00

Ec - 1.2
PPM500 - 580
PPM700 - 810
PH - 6.1
Water temp. - 19
Air temp. - 23.7
Humidity - 53%

Add: 6ml A + 6ml B + 6 liters water

Ec - 1.1
PPM500 - 560
PPM700 - 780
PH - 6.0
Water temp. - 19
Air temp. -
Humidity -

01.04

Add: 5ml A + 5ml B
Ec - 1.2
PPM500 - 580
PPM700 - 810
PH - 5.9
Water temp. - 19
Air temp. - 24
Humidity - 50%

Day 7

17.31

Ec - 1.2
PPM500 - 590
PPM700 - 820
PH - 5.9
Water temp. - 19
Air temp. - 21
Humidity - 53%

Add: 30ml A + 30ml B
Ec - 1.4
PPM500 - 710
PPM700 - 1000
PH - 5.7
Water temp. - 19
Air temp. -
Humidity -

Day 8

18.31

Ec - 1.4
PPM500 - 700
PPM700 - 980
PH - 6.0
Water temp. - 19
Air temp. - 24
Humidity - 43%

Add: 15ml A + 15ml B

Ec - 1.5
PPM500 - 760
PPM700 - 1060
PH - 5.6
Water temp. -
Air temp. -
Humidity -

01.05

Add: 5mg Mg Bio nova MgO 8% + 1tab CO2
Ec - 1.6
PPM500 - 790
PPM700 - 1100
PH - 5.7
Water temp. - 17
Air temp. - 23
Humidity - 48%

11.00

Add: 5.5 liters of water

Ec - 1.5
PPM500 - 730
PPM700 - 1020
PH - 5.9
Water temp. - 18
Air temp. -
Humidity -

Day 9

17.20

Ec - 1.5
PPM500 - 720
PPM700 - 1010
PH - 6.0
Water temp. - 17
Air temp. - 18
Humidity - 76%

Add: 5ml H2O2

Ec - 1.4
PPM500 - 720
PPM700 - 1010
PH - 5.7
Water temp. -
Air temp. -
Humidity -

01.20

Ec - 1.5
PPM500 - 740
PPM700 - 1020
PH - 5.9
Water temp. - 20
Air temp. - 25
Humidity - 44%

11.15

Ec - 1.5
PPM500 - 750
PPM700 - 1040
PH - 6.0
Water temp. - 20.5
Air temp. - 25
Humidity - 42%

Day 10

17.35

Add: 10ml A + 10ml B + 4ml H2O2 + 3 liters H2o + 1ml Dislike (foliar)

Ec - 1.5
PPM500 - 770
PPM700 - 1070
PH - 5.7
Water temp. - 20
Air temp. - 20
Humidity - 78%

11.09

Ec - 1.5
PPM500 - 750
PPM700 - 1040
PH - 5.8
Water temp. - 20
Air temp. - 24
Humidity - 45%

Day 11

17.40

Ec - 1.5
PPM500 - 760
PPM700 - 1060
PH - 5.9
Water temp. - 18
Air temp. - 19
Humidity - 78%

Add: 10ml A +10ml B + 2 liters H2O

Ec - 1.5
PPM500 - 750
PPM700 - 1060
PH - 5.6
Water temp. - 19
Air temp. -
Humidity -

00.53

Ec - 1.5
PPM500 - 770
PPM700 - 1080
PH - 5.7
Water temp. - 18
Air temp. - 22
Humidity - 48%

10.16

Ec - 1.5
PPM500 - 770
PPM700 - 1090
PH - 5.8
Water temp. - 20
Air temp. - 24
Humidity - 43%

Day 12

Ec - 1.6
PPM500 - 780
PPM700 - 1090
PH - 5.8
Water temp. - 19
Air temp. - 24.5
Humidity - 50

Add: 2 liters H2O

Ec - 1.5
PPM500 - 760
PPM700 - 1060
PH - 5.9
Water temp. - 19
Air temp. -
Humidity -

00.48

Ec - 1.5
PPM500 - 750
PPM700 - 1050
PH - 5.8
Water temp. - 20
Air temp. - 25
Humidity - 45%

10.13

Ec - 1.5
PPM500 - 770
PPM700 - 1070
PH - 5.8
Water temp. - 20
Air temp. - 26
Humidity - 52

Add: 2 liters H2O + 10 ml A+ 10 ml B

Ec - 1.6
PPM500 - 780
PPM700 - 1090
PH - 5.6
Water temp. - 20
Air temp. -
Humidity -

Day 13

17.25

Ec - 1.5
PPM500 - 760
PPM700 - 1060
PH - 5.6
Water temp. - 20
Air temp. - 21
Humidity - 78%

19.30

Add: 10ml Mg

Ec - 1.6
PPM500 - 800
PPM700 - 1110
PH - 5.8
Water temp. - 21
Air temp. -
Humidity -

00.42

Ec - 1.6
PPM500 - 820
PPM700 - 1140
PH - 5.8
Water temp. - 21
Air temp. - 26
Humidity - 53%

10.20

Ec - 1.6
PPM500 - 790
PPM700 - 1100
PH - 5.8
Water temp. - 18
Air temp. - 21
Humidity - 50

Day 14

17.41

Ec - 1.6
PPM500 - 800
PPM700 - 1110
PH - 5.8
Water temp. - 17
Air temp. - 19
Humidity - 56%

The mesurements were made with BlueLab Combo Meter.