I've taken advice from other threads, but I'm not getting too much improvement. More details follow the form.

H=Answer if you grow hydro or aero
C=Answer if you grow coco
S=Answer if you grow traditional soil
L=Answer if you grow soilless other than coco (Promix, Hyponex, SunshineMix)
R=Answer if you grow in RockWool
T=Answer if you grow in HydroTon
D=Answer if you run any type of automatic drip system, including into soil or soilless
E= EVERYONE needs to answer lol!


E-indoor or outdoor - INDOOR
E-soil, soilless, coco, aero, or hydroponic - SOIL
E-specific medium - Fafhard 'Red' Potting soil 2TBSP pulverized Garden Lime per gallon of soil. Pour soil from bag into container while shaking the lime in, then thoroughly mixing by hand. No water added.
CSL-Soil type/brand - Fafhard 'Red' Potting soil
HCL-Hydro/aero/soilless system type
SCL-Anything you have added to the soil - 2TBSP pulverized Garden Lime per gallon of soil. Pour soil from bag into mixing container while shaking the lime in, then thoroughly mixing by hand. No water added. Then add about 16oz (keg cup) of MGrow perlite per gallon, also thoroughly mixed in by hand.
SCLR-Soil or slab runoff pH - Drops as time passes despite lime. Input is always 6.5pH (meter has margin of error +/- .2 tho) and output ranges from 6.5 to 5.8 . I use the technique recomended on this site.
E-Water source - R/O filtered well water. About 23 TDS.
E-Source water pH - Reads as 6.6 but add a touch of pH up and it goes to 7.0
HRT-Source water EC (if hydro)
E-Age of plant - 3 - 4 weeks Veg, problems appear after 2 - 4 weeks of 12/12
E-Type of fertilizer - Fox Farm liquids only. I use the chart but halve the dose and fert every time.
E-Rate of application (if hydro, this is your PPM number, preferably after each component is added) - takes about 5 - 6 days for flowering plants to dry out enough to re-feed.
E-Lighting source and distance from plant - 400W HPS about 16" from tops.
E-Air temperature (both day and night if you are running a dark period) - Have a ghetto thermostat...hi/lo thermometer reads low of about 70, high of about 80-85
HD-Reservoir temperature
E-Air % Relative humidity - 40 to 90 percent.
E-Lighting schedule - 12 hours on, 12 hours off.
E-Type of ventilation your room has - 4" CanFan pulling through charcoal filter and out the top. Hooked up to attic thermostat set at 77F.
TR-Did you pre-soak your media in pH corrected solution?


Well everyone, I have been growing both Northern Lights and Laughing Buddha. Symptoms sometimes vary by plant but at about 3 or 4 weeks into the 12/12 lighting schedule, the older fan leaves on my plants start to show damage. Margins tend to curl up and leaves take on a bronze/purple cast. Often the leaves will curl up into tight tubes, but not always. Sometimes they show small orange spots on them, but since I've been better about input pH, the dots are rare. As soon as I see this I do a flush with 3 gallons of pH correct water for a 3 gallon pot, then feed with mild bloom fert. Problems still progress until all the big fans are dead and most of the single-blade bud leaves and tips of the top buds are purple! Leaves get brittle. I get buds, no doubt. But a friend who grows the same strain has much fatter calyxes...his plants are so much happier looking I know I'm losing yield.

<whine>
Please don't tell me to flush with 9 gallons of water per pot. It takes so long and that much RO produces 50 gallons of drain water (if I can't use it for the outdoor garden)...I feel bad about that. I'd rather switch ferts than do that flush routine.
</whine>
FatSean Reviewed by FatSean on . Seems to be a bad Phosphorus deficiency mid-flower. I've taken advice from other threads, but I'm not getting too much improvement. More details follow the form. H=Answer if you grow hydro or aero C=Answer if you grow coco S=Answer if you grow traditional soil L=Answer if you grow soilless other than coco (Promix, Hyponex, SunshineMix) R=Answer if you grow in RockWool T=Answer if you grow in HydroTon D=Answer if you run any type of automatic drip system, including into soil or soilless E= EVERYONE needs to answer lol! Rating: 5