Auto mazar looing vigor and starting to go a shade of yellow.

[kingofthehill]

Soil Grows - Peat Based

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

Your Equipment:
.1) Type and wattage of lights. 2x 180w LED
.2) Distance from tops?40cm
.3) Reflector type? mylar sheet
.4) Is there a consistent fresh air supply? yes
.5) Do you have an exhaust fan and a circulation fan? yes
.6) What are the bulb wattages, kelvin ratings, and schedule? 20hours on 4hrs 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...) j arther bowens multi purpose
.8) Size of container. 12litre

Your nutrients and water:
.9) Source of water. (tap or filtered) What's it's ph? tap water ph 6.5
10) Method of checking water ph. (ph pen, test strips, aquarium test kit...) pen and test strip
11) Method of adjusting water ph. (phosphoric acid, white vinegar, hydrated lime, PH Up...)ph up ph down
12) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. bio biz fish mix. 3ml per liter every other feed
13) How often are you watering between feedings, and how much per watering? I wait till the pot feels light then add 1.5 ltr
14) Any additives or tea's? (Superthrive, CalMag, molasses, Mother's Earth...)no
15) Are your ph levels stable, or do they fluctuate? stable at 6.5
16) What is your ingoing water's ph? ...your runoff ph? outgoing was 5.8 today in going 6.5
17) Do you foliar feed? If so, with what, how often, and at what time do you spray?
no
Your growroom:
18) Indoors or outdoors? indoors
19) What size of closet, room or hut? 5ft x 4ft
20) What are the temps and humidity levels while lights are on? ...With lights off? temps and rh wen on are 76F and 68% when lights off 65F 75%
21) Have you seen signs of insects in the growroom? no

Your strain:
22) What strain are you growing? (Indica dominate or Sativa dom?) auto mazar indica i think
23) Is this an photoperiod strain? no
24) How old is the plant? 6weeks
25) In what life-cycle is it? Vegetative, pre-flowering, flowering, rippening? flowereing
26) From seeds or clones? seed


The plant has been looking a bit limp after about 14 hours of light for a while. Im now finding that the whole plant is loosing its nice green color and starting to look a bit yellow. I have been adding some cal/mag every now and again. Their is also abit of purple stem and vein going on. the flowers are looking in good condition but im worrying they wont in a week or so. I have only added fish mix which is lacking in phosphorus but has alot of nitrogen. Any ideas how to prevent the yellowing from carrying on.

 

[namvet25]

Looks like calcium def.check your runoff water and make sure its correct 6.3 or 6.4. I would flush them with ph water that has 1/2 strenth nutes that contain npk and micro nutes. If your runoff ph is ok you don't need to raise it just use a balance fert with nit,phos,potasium, manganiese,copper, and zinc.

 

[kingofthehill]

Looks like calcium def.check your runoff water and make sure its correct 6.3 or 6.4. I would flush them with ph water that has 1/2 strenth nutes that contain npk and micro nutes. If your runoff ph is ok you don't need to raise it just use a balance fert with nit,phos,potasium, manganiese,copper, and zinc.

My run off has been tested and was pretty low. 5.7. what should i put it in at to get it up to 6.2/3 ? would cal/mag not of added the required cal anyway. thanks for the quick reply.

 

[Hazy]

Got your PM, upload a pic so we can have a better look Hazy

 

[psykadelix]

Does your tap water have chloramines in it? Chloramines do not evaporate. They affect plants with as little as 3 ppm in the medium. They act as a hormonal disrupt er and prevent uptake of Ca, Mg, Zn, Mn. They also make seedling germination take longer and sometimes fail, and produce hermies at a higher rate. My tap water has ludicrous amounts of it. I spent months and months trying to figure it out, because I had an RO filter. RO filter does not remove chloramines. Nothing does except high wattage UV (alternately you can leave your jg of water out in bright sun for 4 hours) or an ultra high pressure triple pass platinum carbon filter (that will set you back about $5000).