DWC issues

[Willie72]

I've given up trying soil grows and gone with a dwc grow but an still having issues.

I am using Royal Dutch A and B fertiliser at 25ml per 10lt, ppm around 650 and ph at 5.7 yet my plant is a sickly yellow and the lower leaves are starting to frazzle. Can anyone point me in the direction of what I'm doing wrong and how to address the issue?

Thanks in advance guys

 

[Mañ'O'Green]

Show me your roots, please. In the meantime..........
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!

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

Problem:

Medium/grow method:

Feed: and supplements used:

water source:

Strain/age:

light used:

Climate:

Additional info:

 

[Willie72]

Will do in morning once up. Cheers

 

[Willie72]

Problem: Yellowing of leaves and lower leaf edges looking frazzled, the leaves weren't dark green last but problem got worse while I was away for the weekend

Medium/grow method: DWC aerated single bucket 10 litres of water

Feed: and supplements used: Dutch pro A+B at 30ml per 10 litre (recommended 250-350ml per 100 litres) See attached pictures for nutrient levels Hydroguard at 5ml per 10 litres

water source: Tap water left in bottles in sunlight for 2 days prior to use to dechlorinate, EC 1.5, PPM 750, PH 5.74

Strain/age: Purple Lemonade auto 12/13 days since sprouting

light used: Mars Hydro LED 300W on an 20/4 cycle

Climate: temp range controlled to 20c RH 35-45%

Additional info: grow tent is 700x700

 

[Willie72]

Show me your roots, please. In the meantime..........
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!

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

Problem:

Medium/grow method:

Feed: and supplements used:

water source:

Strain/age:

light used:

Climate:

Additional info:

I've put the info above

 

[Willie72]

I decided to make a new batch of water today and noticed when measuring the B part of the nutrient mix that it looked like small ribbons I the solution as if some of the nutrients were solidifying out of the solution.

 

[Mañ'O'Green]

Where are your roots? That is not even 1/10th of the roots you should have by now. There are no lateral roots. Are you using high quality air stones? They have very small bubbles that don't damage roots. If your air is too turbulent you may be stripping them off.

I decided to make a new batch of water today and noticed when measuring the B part of the nutrient mix that it looked like small ribbons I the solution as if some of the nutrients were solidifying out of the solution.

Are you following the directions because if you see nutrients precipitating out of solution when you add them to the mix something is wrong.

Do not put your water in the sunlight. I may begin an algae bloom that could continue in the reservoir. Just aerate it overnight.

 

[Willie72]

Where are your roots? That is not even 1/10th of the roots you should have by now. There are no lateral roots. Are you using high quality air stones? They have very small bubbles that don't damage roots. If your air is too turbulent you may be stripping them off.


Are you following the directions because if you see nutrients precipitating out of solution when you add them to the mix something is wrong.

Do not put your water in the sunlight. I may begin an algae bloom that could continue in the reservoir. Just aerate it overnight.

I mixed the nutrients as stated on the bottles and they were solidifying straight out of the bottle into the measuring cup.
Cheers for the heads up about aerating the water.
The air stone was the one that came with the pump I will try to get a better one.
Cheers for your help