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calcium def or???

hdn155

hdn155

Member
How long has this problem been going on?
around a week now.

-What STRAIN are you growing?
two bubba kush two purple and two la confidential
-What was the establishing technique? (seed or clone?)
all from clone
-What is the age of your plants?
2 months
-How Tall are the plants?
the bubba's are around 20" same with the la confidential and the purple kush are smaller at around 9"
-What PHASE (seedling, vegetative or flower) are the plants in?
vegetive
-What Technique are you using? (SOG, SCROG etc)
lst
-What size pots are you using? (Include how many subjects to pot)
2 gallon
-What substrate/medium are you using? What brand of soil mixture are you
ffof
-using?(percentage of perlite, vermiculite...etc?)
a couple handfulls of perlite in each pot mixed with the soil
-What Nutrient's are you using?How much of each with how much water?
pure blend botanicare is my base. npk 1-.5 -1.. plus a compost tea.
-How Often? *Knowing the brand is very helpful*
every few days as i water.
-What is the TDS/EC/PPM of your nutrients used?

-What is the pH of the "RUN-OFF"?
5.5-6
-What method of pH test was administered? Using Strips? pH pen?
strips
-How often are you watering?
every few days as needed.
-When was your last feeding and how often are you feeding?
few days ago
-What size bulb are you using?
two 1000wt hps
-What is the distance to the canopy?
3 feet
-What is your RH Factor? (Relative Humidity)
40-50%
-What is the canopy temperature?
78f
-What is the Day/Night Temp? (Include fluctuation range)
18 degrees.. night time temps are around 60.
-What is the current Air Flow? (cfm etc.)
305cfm cooling the lights, 152 exhaust, not sure about the ac.
-Is the fan blowing directly at plants?
there is a fan inside blowing air at the canopy.
-Is the grow substrate constantly wet or moist?
no
-Is your water HARD or SOFT?
i water with distilled
-What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well
water? Distilled? Mineral Water?
distilled with a ph of 6.0
-Has plant been recently pruned, cloned or pinched?
pruned to remove dead leafs.
-Have any pest chemicals been used? If so what and when?
no
-Are plant's infected with pest's?
no
 
stinkyattic

stinkyattic

her dankness
Veteran
Your runoff pH is really quite low for a soil grow.

The soil level is very low relative to the rim of the pot. The actual amount of soil in there is far less than the nominal pot volume, and those pots with built-in drip trays tend to allow a soggy mucky layer to sit in the bottom, further decreasing your amount of useable dirt. That might have something to do with why the leaves on that plant cup downwards as if it is pot-bound. I'd repot, ripping off the drip trays and using them upside down to prop your plants up off the cold floor (night=60'=cold floor I'll bet). Then knock out any mud in the bottom, re-fill part way with nice light soil with plenty of perlite, set the whole root ball on top of that to bring the soil level almost with the rim, and backfill around the edges to set the plant firmly in place.

Is there a reason you chose HPS for veg? That's not really standard procedure- more BLUE light would be better at this stage, and a more efficient use of your electricity.
If you are using RO or distilled water, you have no choice but to add a calcium supplement.
You night temperatures are very low. 60 degrees is chilly, and will exacerbate any soil chemistry problems you have. Try to bump that up to about 68 degrees.
 
M

MediGreen

New member
Our box currently has a couple spots that aren't sealed in the back near an open window. Im going to reseal them tonight or tomorrow. Aside from that what can we do to keep the night time temps up?
 
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