ifsixwasnin9
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- Nov 9, 2009
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I have 2 plants in 7th week: white widow hybrid and California gold (don't know which is which). The larger plant (one on left) developed yellow leaves at the bottom about 4-5 days ago and now it's showing brown spots and a little yellowing on the 2nd row. The top of the plant is green and still growing. The other plant is doing pretty good although it has a couple yellow leaves at the bottom, too.
1. Used commercial potting soil mixed with a little vermiculite and bottom 1.5" is all vermiculite.
2. Transplanted in 4th week from 2L bottles to larger pots and took them a week to recover and start growing again.
3. Grow area is 3Wx2Dx5H.
4. 250W HPS light and added 100W HPS light 3 days ago.
5. Light time until last week was 12-13 hrs, now it's 14-15 hrs.
6. I kept the plants a good 2-2.5' from lights and moved them to about 14-16" three days ago.
7. Using 20-20-20 diluted (~40-50%) nutrients 2x/week. I added magnesium (1 teaspn/gallon) 3 days ago.
9. I was watering (distilled) every day just to keep the soil moist, not overwatering.
10. I have an external and internal fan and temp is 75-80 degrees.
11. I don't know the ph because my crappy meter doesn't work. (I ordered a new tester and should be here 5-7 days.)
The plant in question curls its leaf edges while under light. Out of the light the leaves straighten out and looks great in the morning.
Only thing I can think of is a bad ph or low CO2 levels. I know these plants are a little stunted but this is my first grow and it's harder than I thought. Anyone?
(Large photo just a tad overexposed. No sign of yellowing in top half of either plant.)
1. Used commercial potting soil mixed with a little vermiculite and bottom 1.5" is all vermiculite.
2. Transplanted in 4th week from 2L bottles to larger pots and took them a week to recover and start growing again.
3. Grow area is 3Wx2Dx5H.
4. 250W HPS light and added 100W HPS light 3 days ago.
5. Light time until last week was 12-13 hrs, now it's 14-15 hrs.
6. I kept the plants a good 2-2.5' from lights and moved them to about 14-16" three days ago.
7. Using 20-20-20 diluted (~40-50%) nutrients 2x/week. I added magnesium (1 teaspn/gallon) 3 days ago.
9. I was watering (distilled) every day just to keep the soil moist, not overwatering.
10. I have an external and internal fan and temp is 75-80 degrees.
11. I don't know the ph because my crappy meter doesn't work. (I ordered a new tester and should be here 5-7 days.)
The plant in question curls its leaf edges while under light. Out of the light the leaves straighten out and looks great in the morning.
Only thing I can think of is a bad ph or low CO2 levels. I know these plants are a little stunted but this is my first grow and it's harder than I thought. Anyone?
(Large photo just a tad overexposed. No sign of yellowing in top half of either plant.)