Raedwulf
Member
Can anyone help with identification / advice for a problem I have with one of four plants - all from the same pack of feminised seeds. As you can see from the photo below, this plant has developed a mottled / streaky leaf discolouration. None of the other three appear affected - as yet.
I fear it may be a virus - mosaic or streak - but I have included as much information as I can think of (clutching at straws?) in the hopes it could be something else.
Strain - 'The Church' (GHS).
Hand-watered Coco.
From seed.
Age of plant - 24 days.
In Veg - 14 days.
Medium - Canna Coco Professional plus.
Pot size - 2.5 litre.
Potted-on 12 days ago.
Nutrients: Canna Coco A + B (12.5ml of each), and Rhizotonic (10ml) to 5 litres of water - doseages according to a schedule created on the Canna web site.
Fed once a day to run-off.
TDS/EC/PPM - Unknown. (I don't have and can't afford an EC/PPM meter).
Tap water (pH 7.5 > 8) *see water company's dec below.
Before adding nutrients the pH 8 is adjusted to pH 6.5 with dilute Phosphoric acid.
After adding nutrients, the mix stays about pH 6.5 - it is further adjusted down to pH 6.0 before use.
Tested using 'Growth Technology' pH indicator kit.
Light intensity - 200w 6400K 100% PAR Horticultural CFL (Branded: 'plug and grow').
Distance to the canopy - 7 inches (18cm).
Temps at canopy: 29 > 30°C
Temps at root zone or reservoir: 22 > 25°C
Night temps: 22°C Min > 24°C Max.
Current air flow (with carbon filter): 140 m3/hour.
Is there air blowing directly onto plant - No.
Using CO2 - No.
Relative humidity: 35 > 50%
Growing technique: simple pruning of early suckers only.
Pruning is yet to take place (plant too young).
Pests: Have checked all over (and under) the leaves with a 30x loupe - none found. Also, no sign of gnat larvae etc in medium.
For the sake of completeness, here is my water company's declaration:
---
Source of water before treatment:
Your water comes from both the River Itchen and underground sources in the chalk at Otterbourne.
Average hardness of source:
CaCO3 274
Ca mg/l 109.6
...
MEAN AVE. TEST RESULTS
Water conductivity: 565 μs/cm (tds).
pH: 7.4
sodium: 11 mg/l
Nitrate (NO3): 28.52 mg/l
---
Readwulf
I fear it may be a virus - mosaic or streak - but I have included as much information as I can think of (clutching at straws?) in the hopes it could be something else.
Strain - 'The Church' (GHS).
Hand-watered Coco.
From seed.
Age of plant - 24 days.
In Veg - 14 days.
Medium - Canna Coco Professional plus.
Pot size - 2.5 litre.
Potted-on 12 days ago.
Nutrients: Canna Coco A + B (12.5ml of each), and Rhizotonic (10ml) to 5 litres of water - doseages according to a schedule created on the Canna web site.
Fed once a day to run-off.
TDS/EC/PPM - Unknown. (I don't have and can't afford an EC/PPM meter).
Tap water (pH 7.5 > 8) *see water company's dec below.
Before adding nutrients the pH 8 is adjusted to pH 6.5 with dilute Phosphoric acid.
After adding nutrients, the mix stays about pH 6.5 - it is further adjusted down to pH 6.0 before use.
Tested using 'Growth Technology' pH indicator kit.
Light intensity - 200w 6400K 100% PAR Horticultural CFL (Branded: 'plug and grow').
Distance to the canopy - 7 inches (18cm).
Temps at canopy: 29 > 30°C
Temps at root zone or reservoir: 22 > 25°C
Night temps: 22°C Min > 24°C Max.
Current air flow (with carbon filter): 140 m3/hour.
Is there air blowing directly onto plant - No.
Using CO2 - No.
Relative humidity: 35 > 50%
Growing technique: simple pruning of early suckers only.
Pruning is yet to take place (plant too young).
Pests: Have checked all over (and under) the leaves with a 30x loupe - none found. Also, no sign of gnat larvae etc in medium.
For the sake of completeness, here is my water company's declaration:
---
Source of water before treatment:
Your water comes from both the River Itchen and underground sources in the chalk at Otterbourne.
Average hardness of source:
CaCO3 274
Ca mg/l 109.6
...
MEAN AVE. TEST RESULTS
Water conductivity: 565 μs/cm (tds).
pH: 7.4
sodium: 11 mg/l
Nitrate (NO3): 28.52 mg/l
---
Readwulf
