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i wouldnt foliar feed that late into flowering

bluelab is quality. their truncheon (EC meter) doesnt need calibration, and it's got a 5 year warranty. cost like 105$ on ebay. Or you can buy a cheapo meter, and have to replace them when they break, and constantly buy calibration solutions

can put a plant every 6 inches in aSOG. flower right away, though. thats... 32 plants.. maybe lollipop em to help airflow in there

check out vertigrowsystems.com. i've used these trays (2 tiers) in a SOG before, but this run im going to do a 1level scrog. Their whole kits are kind of expensive, but you can just buy 1 tray/small stand and it's not so bad. last run i did like 30something plants, this run im going to do 10 in...

the bulk of that little plant is still in that rockwool cube, and you're saturating the shit out of it. let it dry out a bit so the roots can grow

You answered your own question. It's not because of your plants. Move out of there. mold and asbestos... they should be paying YOU to live there. As far as trying to find out what kind of asbestos it is...: DONT DO THAT YOURSELF DUDE. Hire a professional to figure it out, and use his report...

I'll be running an exhaust fan & carbon scrubber regardless of which reflector I choose

does Anyone know what kind of light patter cooltubes throw? All i hear is people saying that the light spread is shit. I assume they mean it's shit for a square garden? it might work for a 2x5 space though.... WHAT DOES THE COOLTUBE LIGHT PATTERN LOOK LIKE?!?!?!

600w with a dimmable ballast. I have the option of dimming it down if it gets too hot. today the high was 70F. i dont run AC There's plenty of air movement in the room. 400cfm exhaust fan and 24" circulation fan

Hey. I usually grow 360degrees around vertical bulb with no reflectors, but due to my current living situation i no longer have the space and need to go horizontal and light from the top. the space is a walled off closet measuring 2'x5'x7'tall. The room its in is ~10'x12' The issue...

Hey rollitup. So I just chopped up my mothers and have clones rooting out in the aerocloner. Last couple rounds i used a vertigrow (www.vertigrowsystems.com). Those things are baller and can produce really good yields when set up right (it takes some tweaking). But now I live in a different...

set up valves on your pump to drain your res. I'd say the biggest risk is leaks. I've never had a pump fail on me. If you use a system with no medium (aero or dwc/ebb n flow with no hydroton) then your plants are more susceptible to dying. If your roots are in hydroton, they can last longer...

CAPs customer service sucks dick and they dont even stock half of their products. but they have really good prices!!!

hows your humidity/ventilation situation? Do you run all your fans at night? keep them on at all times to help fight the PM.

you can flush for a week or so before harvest. just use plain water. You can also flush if you went overboard on nutes and got some burn. again, plain water. and just water until you see a bit of recovery. I've harvested and cut half and week 11, and half at week 12 (1 week of flushing w/...

couldnt hurt to bump up your ppms a bit. but dont go crazy with it. lookin good

your ph levels are fine. dont flood at night. you can flood for 15 minutes during lights on. do it every 3 or 4 hours.

looks good. You're running ebb&flow in those buckets? what's your watering cycle like? roots look great.

THIS IS THE VERTICAL THREAD MAN!!! NOT HORIZONTAL!!! But all capslock aside. Most of the light comes from the long side of the bulb. If you hang it horizontally without a hood, then you're wasting at least 180 degrees of light. The idea of hanging bare bulbs vertically is to utilize all...

To quote all of my plant science and botany lectures: the 3rd leaf layer is a parasite. The leaf layer 3 deep into the canopy is only utilizing ~5% light of the top ones. Dont trim any fan leaves that are getting a good amount of light. If they are in the back and all shaded, however, it's safe...