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what kind of supplement do i use for a potassium deficiency?

Hi I think my plant is curling under from a potassium deficiency... Could some one please confirm. and also what is the best form of potassium to use to correct?

Hi this is my first grow cabinet. 4 cfls, 2 passive intakes and 2 exhaust fans, one oscillating fan Temp goes between 72f and 85F! :( 17/7 light schedule I had some initial trouble with lack of Nitrogen which seems over now that I added blood meal. I am looking for some general feedback...

Hi I am trying to add more lights to my grow but having trouble figuring out a way to mount them AND my temps are 80+F with doors open on my cabinet.

Do I have enough light? Too much?? My plants are getting burn marks on the edges and heat in my box stays in the 80Fs... but according to what i've read ideally i should have ten times as much light!??? i have 3.82 sft with 68W approx 4420Lumens (4 22" lights17wEach) The FAQ states I...

Please help me understand what is casuing these early problems. My lower leaves are yellowing and the tips are burning... 75F, 24/7 approx 48 watts of cfls. They have plenty of water and i just gave a VERY light dose of foxfarm GrowBig with water. Water is very slow to leave soil in this...

I am making my first grow box(primarily to grow from seed to size and then plant outdoors) SO far there are 2 12" CFLs mounted under the shelf shown in pic. I am planning to put a fan on top left/out and bottom right/in... For anyone who has done this before please leave me any...

I've been learning alot about how to grow better weed and as i was reading this health article i realized that ALOT of the principles(oxygen/water/ph) of growing herb are the same in regards to our body's health. Check this out and tell me what you think! Especially the parts about PH...

whatcha think so far? most have flowered but the biggest 15 havent yet... I think i have about 6 weeks left on those which have flowered first.

are these hermies/seeds?

I have moved my mothers into a closet and onto CFLS so that I can flower in the larger part of my room. I have an in and out (bathroom exhaust fan to supply air (65/85CFM) and oscillating fan inside with 3 cfls on 24/7... And a few days later. they are yellow and dry and crispy.. WHat...

I have a k-9 cop living in my neighborhood. Should i take any extra precautions? Are all k-9s trained for narcotics?

I have lowered the light in my grow for 45 clones i've taken and my mothers are sitting off to the side. In short time i want to set my 1000W HPS to flower 12/12 but I need to give my mothers a good home 24. Please help me figure out some place safe for them! I am looking at the closet...

Does anyone know a way to automote my humidifier. im getting sick of carrying 5 gallons of water to it every day lol.

what is a good ph pen to get? Oakton Ultrabasic pH meter $75 Milwaukee Sharp PH WaterProof Tester $75 on up to $215 waterproof, temp compensated, isfet probe, ? etc this is a first time grow- soil 25+ plants... but maybe hydro at somepoint. What is important with these pens? why do...

First time grow in a 12x8x8 1120CFM. I am looking at a can fan 10" 1024CFM. will this alone do the job?? Now on Setup: 1000W MH vented through 10" insulated ducting to a box over my window(pics in grow link-sry) and window is open roughly one inch. (i already blew up an attic exhaust...

I need an expert eye on these who can tell me what is wrong... The diagnoses pics look soo similar for multiple and sometimes opposite problems.. There are a few different issues going on here: 1)downward cupping leaves 2)Yellowing/whiting leaves 3)Brown tips and centers 4)Brown/Black Tips...

I bought a homedepot attic fan(1335 CFM) and put it in a box making it an inline exhaust fan. after about two months of use(just pulling air from the top of the room)--- and the same day I hooked up my new 1000W MH light with vents to it. it died. and it wont come back to life.... I am going...

I have looked through grow faq, etc. But i can 't decipher whether this is overwatering or nutrient deficency... Has anyone found what causes this?? BTW leaves are from mothers which have recently been cut up from clones- and i am trying to nurse them back to health i