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frmboi raises an important issue. Is your MH a grow light rated 6500K color temp or is it the kind sold for lighting which is usually around 4000K and not nearly as effective. If yours is not a grow bulb I suggest you buy one. They aren't very expensive.

Agree. Looks like light burn.

I have transplanted during flower because of similar problems and everything went fine. It's not ideal to transplant during flower but you have to weigh that against the trouble the plant will have if you don't. I would transplant into a larger pot with very light airy soil. Perhaps 30% -...

Autos stay tiny and look stunted until the stretch and then they explode. Two of my autos never got above 3" before flowering, one stayed under 2". I thought she was sick. They all produced 2+oz of bud.

It happens. Never happened to me, I'm too careful but it did happen once to a friend of mine. Yeah that's right it happened to a friend of mine. What massah said. 12 hours or more of dark is the biggie. If you are vegging and you screw up the light, try to keep the dark period under...

What Shadeslay said. Couldn't have said it better myself, though if I had said it myself it would have been better, if you know what I mean? No? Well never mind. :)

NO. As everybody has explained, a 400W hps needs a Mogul socket and a special power supply called a 'ballast'. Expect to pay $100 - $150 for the ballast. A hood and reflector are not mandatory but they increase the amount of light on your plant and help with cooling. Don't take this the...

I think the same as Sworth. AFAIK, no kind of nutrient deficiency produces that effect overnight. That stripe on the left looks like damage caused by some kind of contact. I would guess either light burns or water burns. If you get the leaves wet while the light is on, the droplets can act...

You dont need 1000W to veg your plants. Your 250W bulb will do great. As everybody else says, you are going to have serious cooling problems. I run a 600W in a closet and in the summer I need AC to control the temp. Yeah, like a lot of people I was greedy when I started. I wish I had...

The problem with autos is that you have little control over their size. They just do their thing. I grew autos under a 600W and they finished in 3 & 5 ga pots. In addition to Stelthy's other questions, how much floor space, or more importantly, how much canopy space do you have? The rule...

It would not be easy to keep 250W lamp burning 12+ hours a day on batteries. Even if you stacked up enough lead acid car batteries to sustain the power you need, you still have to get a heavy duty inverter to go from DC 12V to AC 120v. And then you need to charge them which I suppose you could...

Your yield depends on a number of things, of course, strain and cultivation as well as light. Growing with an HID lamp one expects to get about 0.5g per watt. Good growers can get 1g per watt. You are not able to make full use of your lamp with a flat canopy because of the narrowness but you can...

I would be reluctant to fence with one of those. The site says they are made of plain 1095 and there is no mention of laminating it with a softer alloy. I would be concerned about a fracture. Do these blades hold a keen edge?

Here is a post I wrote explaining watts & lumens etc. Lumens & candles are special measurements that have to do with the way the human eye sees light. They are almost useless for assessing the value of a lamp for growing. You are in good shape with your 400W lamp and your 4'x2' footprint...

Usually people take the wattage of the light and divide it by the appropriate canopy area. Eg, a 400W light covers a 3'x3' canopy giving about 50W per sq ft. Outside this 3x3 area, the light is below that level. 50W per sq ft is considered about right. Actually it's a meaningless number...

who made the sword?

Well one grow with autos is not like investing in a vehicle. It's just a bag of seeds. There's no reason he can't easily grow photos after that. I don't know how many plants you are growing but perhaps consider growing both an auto and a photo together. I have a mix in my current grow...

What jawbrot said. I've just finished growing some autos and I would say exactly the same thing. There's a lot of flaky autos out there. It's hard to stabilize autos because you can't clone and back cross. I have one auto that wouldnt flower until I put her under 12/12. Yes check out grow...

It' 15% humidity here and 7000' altitude. Leave a piece of bread out and in 15 minutes you have a crouton. I put mine in brown paper lunch bags, one cola per bag and put the bags in a closet. Takes about 3 days to dry.

That would be a very simple solution! @Potpimp: Thanks, I'll find the proportions from one of the organic recipes. I thought the bone meal was for phosphorous? Thanks and +rep to both of you