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You should also know that LEDs have basically "infinite" lifetime and they dont lose light output as they age. So it's just a one time investment. The question is are they better than HPS for growing dense buds, the heat, life span, power usage and size make LEDs optimal for indoor growing.

Those are some fine plants, how long did you vegged them?

I thought LED is the future and HPS will become obsolete, care to elaborate? The price doesn't surprise me and honestly it is not overpriced given the number of leds it has.

Well I bought the seeds in Barcelona from a grow shop, came in a plastic test tube taped to a piece of paper with the serious seeds logo and ak47 under it so that's my only assurance about the strain. The brochure said ak47 is a hybrid so it can have characteristics from both types of cannabis...

http://www.metacafe.com/watch/7277405/grow_room/ Yes I kept the plants the first week or two of flowering under 84F with low humidity 28%- 35% due to the overwhelmingly hot summer, not even the AC could keep up. But now temps are cooled down and I have 'em at 76F constantly with humidity at 40...

I vegged them bit long, 6 weeks so the one on the right grew more than I expected, 1.05m but it's a sativa (i think) the one on the left is probably indica and only grew 85cm but it has bigger buds than the sativa is that normal? I have two 150W HPS lights and I water them with ferts 20-20-20...

Sometimes they even blow up, wouldn't recommend trying it.

That does make most sense, however that doesn't explain why topic starters check "Do not allow posts to be edited" option. I fail to see any logical explanation why a thread starter would want/need this enabled.

What kind of a person would narc on a little 'ol lady, that's what I'd like to know.

Some kind of nut lockout, I believe its N but might be wrong. Check your soil PH I believe that's the main cause for whatever deficiency you have. The last picture its something else, I do not know what.

OK I watered today, waited for it to drain and took measurements. The PH level was/is 7.2 is that too high? Should I use distilled water in future or should I just flush now? What's concerning me is also that the leaves are yellowing, at least under the HPS light, they look light green under...

OK I measured the soil PH value, I dug a small hole with my finger at the edge of the pot poured normal tap water to fill it up and left the probe in for about 5 minutes, it said 7.10 dead does that sound ok? I need some reassurance that these numbers are correct as I have my doubts cause of the...

I only managed to find "demirilized water" its application is for car batteries, refrigerators, steam irons etc, is that the same as RO water? It was bit expensive, around $0.5 per liter.

Having a bit of an issue with the PH meter I bought. The instructions say I need to calibrate it before 1st time use with a buffer solution that has known PH value. I'm not sure where and how I can obtain a solution that has already known PH value but without any calibration I measured tap water...

When I come to think of it, I did spray fert on the leaves and I can see few drop marks on the leaves, could that explain the purple stems on just handful of branches? I did it under advice from something I've read somewhere just can't remember where, guess that was a bad advice.

I was worried about heat like yourself, but the only way to know for sure is to just do it and take temp readings as close as possible to the tops of the plants, if it goes above 90F over few hours then it's time for plan B.

Here's a picture of my two AK's I think since AK is a hybrid the one on the left is indica and the other is sativa or vise versa or I'm just tripping?

Things are looking good although the stem is still purple there is significant growth over the past 24 hours, more than an inch. The pinched tops are starting to grow on the side rather than up and new tops are slowly forming so the growth is most definitely not impaired. I'm about to go buy a...

I have very little faith in the tap water here. It has metallic taste and smell, I do not even drink it so why should my girls? I will most definitely obtain a PH meter by tomorrow and take measures of the soil PH, the bottled water I use and the tap water. I'll report back to let you know.

I use bottled mineral water with some (little) NPK in it, not sure what its PH value is. I only grow 2 plants for personal use and I do not plan to grow more than that in future.