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you urine project could work if you have beneficial bacteria to break down the urea into a usable form for the plant to use. if your soil is inoculated with mycorrhizae it'll help break it down. the black gold soil will probably run out of nutes sometime in flower. if you're planning on staying...

what i did was run a single 8/3 wire from a 40a circuit to a sub panel with 4 20a breakers inside. now i can run 4k worth of lights an a 12,000 btu portable a/c without worrying about fire, or popping breakers. now when i move i can take it all with me. there was no modification to the house...

if you feed em a little tonight you'll slow whatever it is that's effecting them. on your next feedings keep the ph under 7.0. do you aerate your water or are you using tap or r/o water? with the flushing you are starting out now with a fairly leached soil, so adding nutes back in won't hurt...

they are fine under the mh. if you're really concerned about it being too bright, move the light up. the inverse square law will provide a substantial lumen drop by raising the light a few inches.what is the ph when you feed? flushing is usually a last resort, sometimes just a heavy watering...

this is what a thrip looks like. this one does not fly, although some varieties of thrips can. check the under sides of your leaves. the juvenile thrips are white with the same shape. mites are usually round, and can be red, white, or black....i think. if you try lady bugs, you'll need more than...

looks like a ph fluctuation. any idea what your ph is when you feed? runoff ph? what kind of soil did you transplant them to? if you've already flushed you'll need to feed em again fairly quickly. you washed away any salt build up along with any nutrients left in the soil presuming you flushed...

feeding them any cal/mag.? any micro nutes? looks like a P deficiency. i'd bump up the nutes a bit.

if you're looking for yield, ditch the hood and go vertical bare bulb. turn the closet into a small veg area, and take clones the 1-3 weeks of flower. it may set your flowering plants back a few days, but the clones from the flowering period will take a bit longer to root also. probably a week...

i'd like to know how it can be determined he has mites from the same out of focus pics i'm seeing. thrips are easy to spot, so are mites. i didn't see a bug in the pic, did you?

i've had thrips. i can't answer the question you asked as far as the ingredient, but there are alternatives. lady bugs work but you'll need a lot of em, and they still won't get them all. try monterey with spinosad. you can get it at lowes or HD, can't remember which one though. i'm pretty sure...

get better pics. looks like a mag. def. from here but i can't really tell. if they are golden/rust or yellow spots it's not mold.

my 1k from htg pulls 9.2 amps. a 400w hps would pull about 4 amps. 600w is the most efficient hps out there. i'd wait on the led's. the technology is there, it's just not there for mj imo. hps will penetrate far better than cfl's or led's. a small fan probably won't cut it. depending on your...

http://www.hydrocanna.com/diy-do-yourself/7255-another-diy-tent.html

check this out...i wrote up a diy thread on another website for building a 4x4 tent utilizing a 1k hps and 424 cfm fan. when i built this tent it wasn't meant to be sealed, so i had a booster fan laying around and used it to push air across the light, and the exhaust fan to clear the leftover...

haven't read this entire thing, but the fact you are comprised of mostly water (2/3) is basic enough science for me to believe in evolution. what happens when 2 hydrogen molecules combine with an oxygen molecule.....holy fucking bat shit.....it "creates" water. get 6 carbon molecules, 12...

2-3 ga. pots for the auto's...you could get by with 1 ga. but ya might end up root bounding them so go bigger and give em room. for non auto's it depends on your veg. time. could be up to a 10 ga. pot, or as little as a 1 ga....just depends. there are plenty of cal/mag only nutes. just ask and...

those yellowing spots in your pics are the start of a cal/mag deficiency...i'm not saying feed them veg nutes yet, but you'll want to give em some cal/mag.. your seedlings look 1 1/2 - 2 weeks old, and those peat pucks have nothing to sustain the plants, other than holding water well. i've ran...

give em a light dose of cal/mag, and they should be fine. if ya don't you'll be chasing a cal/mag def. the entire grow.

put in y pipes in front and back of the cool tubes and have that fan pushing that shit out of the tent...1 intake for the lights and 1 exhaust. to cool the room you'll need another exhaust fan and a decent sized intake. put your exhaust high and intake low.....cool air is lower and will stay...

actually the 1st day of flowering is when you see pistil clusters, i.e...more than 2 pistils. if you veg long enough a plant will show pre-sex pistils. this doesn't mean you start counting. introducing 12/12 activates a hormone that triggers the plant to flower. still not counting yet...usually...