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When exactly did it start happening? Did you change anything else besides just the lighting?

I agree with Growalater. LED can grow just as well as HPS, but 90w of LED is only comparable to 90w of HPS. Now, if you wanted a bigger yield you can get 600w LED panel and use about the same electricity as a 400w HPS, since you won't need 85% of the fan/cooling. But, a 600w panel will cost...

Today is the start of Week 7 for the Grandaddy Purps, the Bubba Kush, and the ChemDog. Here are a few shots just before the lights went out. Left to right - ChemDog, GDP, Bubba Kush, and on the far right is XJ-13 on week 6 (she was added a week late).

Nice poo juice. :) Also, you should consider moving the lights that are under the canopy off to the sides, angled in. Most of the light is absorbed through the top of the leaf, so side lighting is more effective at illuminating the lower canopy.

:mrgreen:They look cooler.bongsmilie

Probably right. Stick to the basics and dial in everything else before trying experimental stuff. When you're pulling 1g/w then you can afford to try something different. Until you have the perfect nutrient regiment, a solid set-up, etc, just stick to stuff like Snowstorm Ultra for more resin.

Plants look great! :) Frosty buds, from seed or clone?

There is a lot of discussion about UVB bulbs. The idea is that UV light triggers more resin production, since the resin is actually the plant's defense against UV rays from the sun. However, UV light also breaks the resin down (since that's what the plant is protecting against). I've read that...

Probably not a scam. If there is one thing I've learned from advanced nutrients, it is that their products usually work. Now, whether or not it is worth $100 per liter is a whole other issue. I'm betting it works, but I'm not ready to drop $100 to see how well.

It all depends on how much light you're giving it in the first place. There is such a thing as 'too much' light; but in general, more light = more weed.

I read that article. All it demonstrates is that you don't quite understand the science behind the lighting. You claim that the LED limits the light spectrum too much to be able to produce results. The reality is, you don't need 'full spectrum' because even the sun gives off wasted light. All...

Seconded. I've used the no pest strips with great results.

I grow from clones, so males are never an issue; but, this thread still interests me a great deal! Can't wait to hear the results!

Looking good :). What are you going to be flowering them under?

First off, that panel is overpriced. Secondly, LED 'marketing' is greater than LED performance. A 120w will not out perform a 400w panel. A 120w can make a few plants produce as much or more than a 400w, but the light footprint is much too small to outperform a 400w. Generally speaking, LED can...

HPS works very well. LED is now starting to work very well. I conclude we combine them. *points to signature*

The UFOs are a pretty good addition, but they don't have much coverage. If you can save up for it, I'd recommend a 250-300w panel but that's around $400. Here's a 250w panel I came across for ~$340 including shipping...

Day 47, pic update. bongsmilie Just started the flush. Water only from here on out on the day 47 plants. The day 40 plants are getting light nutes this last week, then flush.

From my experience, they don't.

I don't see why not. I have several and I foliar feed all the time. Occasionally, I'll spray my UFOs a little when I'm in a hurry. If they can take occasional direct sprays from water then a little humidity shouldn't hurt it.