Need help identifying problem

[Dantheman#1]

Hi I need some help to identify what is wrong with my plant please . It is a royal dwarf auto I am 4-5 weeks into flowering using plant magic soil and bio bizz Nutes.

 

[Daipot]

A little nute burn and maybe some calmag deficiency. Nothing too worry about really. It’s an easy gix

 

[Mañ'O'Green]

@Dantheman#1 Welcome to AFN Well that can be a couple of different things.

Please fill in this form: (copy and paste part is below, this first one tell what specifically to include)

-Problem: (brief description)
-Medium/grow method: soil; soilless-- coco, or peat based like Promix, etc. (please provide the actual product name); DWC, NFT, etc.
-Feed and supplements used: include brand, dosage/strength, frequency of feeding and watering (alone); method-- by hand, drippers, rercirc' or drain-to-waste,... N-P-K #'s too if you can!
-Water source: RO/DI; tap- dechlorinated-?..... EC or TDS reading; pH (don't bother with this on RO/DI, do bother with TDS/EC though to confirm it's working well enough)
-Strain and age
-Climate: night and day ambient T and RH%; res' temperatures; any extremes in T/RH% exposure
- Light used: HID, LED, COB, combo of,... wattage; light cycle hours (20/4, 18/6 , etc.); distance to tops....
-Additional info: PH in the root zone. How long have the plants been affected?...How fast did symptoms appear?... Anything else you think might be relevant..

--Pictures including WHOLE PLANT PICS, and troubled leaves.. use normal light or flash as other light sources ruin color rendering, critical for diagnostics! Turn off the grow lights.

✂ - - - - - - - - - - -
(copy and paste)-->

Problem:

Medium/grow method:

Feed: and supplements used:

water source:

PH in the root zone:

Strain/age:

light used:

Climate:

Additional info:

 

[Dantheman#1]

Hey thanks
Problem: tips of leaves going brown crusty and pointing up, random brown dots , a few yellow leaves at the bottom

Medium/grow method: plant magic supreme soil

Feed: and supplements used: bio bizz photo of recent feed chart below

water source: tap water

Substance	Typical Value	UK/European limit	Unit
Aluminium	6.7	200	µg Al/l
Calcium	15.5	-	mg Ca/l
Residual chlorine - free	0.36	-	mg/l Cl2
Residual chlorine - total	0.46	-	mg/l Cl2
Colour	1.2	20	mg/l Pt/Co Scale
Conductivity	151	2500	µS/cm
Copper	0.0197	2	mg Cu/l
EColi	0	0	no/100ml
Fluoride	0.06	1.5	mg F/l
Iron	7.4	200	µg Fe/l
Lead	0.39	10	µg Pb/l
Magnesium	2.7	-	mg Mg/l
Manganese	1.1	50	µg Mn/I
Nitrate	2.12	50	mg NO3/l
Nitrite	0.002	0.5	mg NO2/l
Sodium	10.3	200	mg Na/l
TotalColiforms	0	0	no/100ml
Turbidity

PH in the root zone: between 6-7 only have a colour coded tester

Strain/age: royal dwarf 4-5 weeks into flower

light used:Mars Hydro ts 600 and a 125 cfl

Climate:22-29 degrees not sure about humidity

Hope that’s good enough and thanks for the help pal

 

[Mañ'O'Green]

Plant Magic Supreme soil does not list a guaranteed analysis? Is one printed on the bag? How often are you atering and how often are you fertigating? Why did you stop the Top-Max? are you fertigating/watering to 15% run-off?

 

[Dantheman#1]

No nothing on the bag and feeding with nutrients every watering and yes always water to run off Each plant takes 2.5 litres every 2-3 days. And Stoped the top max because the first few times after using plants showed burnt tips

 

[Mañ'O'Green]

No nothing on the bag and feeding with nutrients every watering and yes always water to run off Each plant takes 2.5 litres every 2-3 days. And Stoped the top max because the first few times after using plants showed burnt tips

I was afraid of that, your soil is peat based and it retains nutrients longer than coco so you should be going water day, water day, nutrient day, repeat. Follow the All-Mix chart.

You really need to monitor and control the Relative Humidity between 40% and 60%. The plant only moves water and nutrient through the plant when the RH is in range. So even if things are perfect in the pot if the RH is out of range the plant can starve to death.

Now to fix the issue just water PH 6.2-6.3 to 30% run-off day 1, water PH 6.2-6.3 to 30% run-off day 2, Fertigate with 50% strength nutrients from the chart If you have Bio-Heavan OR Mykos, Kelp and Humic acid add that in PH 6.2-6.3 to 30% run-off. This should get you back on track. I would go with 70% strength nutrients from now on and cycle water day, water day, nutrient day, repeat. and just keep an eye on them.