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Guys, I have an 8 inch fan attached to a Wye connector in order to split my ducting for two rows of lights. Currently only one row is being used, so I covered one end of the Wye with a circular piece of cardboard and secured it with aluminum duct tape as a seal. Only thing I'm concerned about...

Just wondering if they work with the Hortilux bulbs now? I run 250w HPS lights.

I need to route power from another room and can't cut holes into the walls (I'm in an apartment). This will require about 30-40 feet of extension cords to my lights. Is this going to cause a substantial drop in the lumen output of the lights?

I recently read a post where a grower tried out 2 cycles using 1/2 tbs per 5 gal Dynagrow (chemical) vs 4-5 tbs Pure blend pro (organic). THis would make the chemical nutrients about 10 times as strong - is this about right? I just assumed the NPKs would be about the same but I've never used...

I'm used to seeing dispensaries all over the place in CA; is it like this anywhere else?

I've heard that the carb loading formulas (like Sweet from Botanicare) are just blackstrap molasses with other preservatives mixed in. Is this true? Can I just skip the expensive bottles and buy some cheap molasses?

I've heard dolomite lime is the same as Cal-Mag which I currently use. Does that mean I can simply use the garden lime in my hydro garden instead of the cal-mag? Thanks

Seems to me just the removal of of heat buildup would remove so much heat emissions from the lights, that running cool air through them wouldn't add too much. I could easily be wrong though. Has anyone noticed a significant drop in temperature (5+ degrees) in the grow room itself when...

I'm more of a techie than a gardener and have been really looking at those growtronix systems. From what I've read from others they can do everything: control CO2, temps, humidity, adjust ph and PPM via drip feeders, even shut off the lights or pumps in case of a critical reading. And they do it...

I know its not ideal, but can I use just a regulator and CO2 calculator to approximate usage, and still be reasonably accurate?

I'm building a grow tent and it looks like one of the beams will have to hold 2 600w lights (with sealed hoods) and also a 50 lb carbon filter. I know nothing about the load bearing capacity of wood. Assuming the lights are 35 lbs each (I haven't received them yet) can a 2x4 safely hold 120 lbs?

Hi all, I went with the stinkbud aeroponic setup because it looked like the most efficient DIY setup available. Am I missing out on anything else? Or is Stinkbud Aeroponic the best?

I found a really well done grow room sign for Michigan: http://statebar.net/restrictedarea.pdf Does anyone know where to get a similiar sign for California?

Do you guys use 1 or 2 fans for cooling your hoods? if only 1, is it better to use an intake, or exhaust?

I'm looking at this light for my 600w HPS lights: http://aeroponicsnmore.com/lighting-equipment-reflectors-hoods-c-1_9/supernova-aluminum-hps-or-mh-reflector-p-90 Everything looks great except the flange size: 4". Is a 4" fan enough to cool a daisy chain of lights adequately? I'm not sure how...

This is my first time growing OG Kush, is it known as a fairly high smelling strain, not that much, or in the middle?

I'm thinking about housing my flowering units inside a tent (it would help greatly with light and CO2 control). But going to a tent would greatly complicate hanging lights from the ceiling. Can I instead hang them from the 3/4" PVC frame that I build my tent with?

I'm considering running CO2 to increase yields. Problem is venting the lights. I know it's not ideal, but can I just vent the lights into a far corner of the room? This way I circulate air, but don't have to worry about exchanging air from the outside (I live in an apartment so I can't cut holes...

I'm thinking of using either 2" chicken wire, or 2" nylon netting for screen training my plants. The nylon netting is a much more convenient and versatile material, but I haven't read much about it being used for SCROG which makes me wonder if it is strong enough to hold plants down without...

I originally planned on a side-by-side, rectangular setup for my flowering units but then started experimenting with a squared setup. See picture: There is better cross-light coverage here, but the problem is that there are 4 feet away from the perimeter. I plan on screen training, so unless...