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I've seen that exact guide posted on here before, it's a good one and it's the method I'm using, well, starting to use anyway. The plant I intend to train just went into it's final pot two days ago, it's at the 5th stage of that guide. I do all my experiments side by side, try to pick out 2...

These should tell you all you need to know about ballasts https://www.rollitup.org/view.php?pg=faq&cmd=article&id=27 https://www.rollitup.org/view.php?pg=faq&cmd=article&id=347

Root bound is a myth, you can grow a massive plant in a small pot if you just water when the soil dries, and feed when the plant requires it, the hard part is knowing when to feed/water and also being there every time they need it. I for one much prefer if I only have to go to my room once a...

60c is way, way too high for plants, I'm actually surprised they are still alive! Part of your problem is that you have your ventilation the wrong way round, read this https://www.rollitup.org/view.php?pg=faq&cmd=article&id=581 The other part is that your intake temps are higher than the ideal...

Of course you're right, I was meaning if you wanted to grow one big, tall plant, if that was dictated by the shape of the growbox or whatever, then cfls would probably be better at getting light to the lower budsites than a big hid. The best way would be with a hps above and then cfls around the...

A passive intake just means somewhere that air can freely flow through, usually with a light trap so that light cannot escape or enter and disturb your flowering cycle, essentially a hole. A simple light trap is a short piece of flexible ducting, bent around 90-180 degrees, as much as is needed...

Depends how good you are at growing tbh. Whether you can keep temps/humidity within optimal ranges, how well you can keep ph and nutrient concentrations at optimum levels, how much veg time you give it, if/how you train it, the list goes on. There are so many factors to consider it is almost...

You're better off without an intake fan https://www.rollitup.org/view.php?pg=faq&cmd=article&id=229

Every grow is a learning experience imo, when you get the hang of growing you will want to experiment with different training methods etc to try to optimise your yield. Imo if you don't learn something you probably weren't paying attention ;-)

I think that plant is still being overwatered, you can tell from the way the leaves are drooping. Lose the intake fan or turn it into an exhaust, see here https://www.rollitup.org/view.php?pg=faq&cmd=article&id=229 How close are the lights to the plant? Cfls should be within 2 inches of the tops...

If you want to put 400w of lighting in there then you are probably better off with hps, they are almost twice as efficient as fluoros and a watt is a watt as far as heat output is concerned. 400w of fluoros will give off at least as much heat as 400w of hps, but the light output from the fluoros...

That looks ok for growing 2 small plants, is there a way to adjust the lights to keep them right above the plants? The thing with cfls is that you need the plants within 2 inches to really get an effect from them. If the lights are too far away the plants will grow tall and spindly, stretching...

https://www.rollitup.org/view.php?pg=faq&cmd=article&id=229

1)As high as it will go at that size, lower it an inch or so every day or two, depending on how they are reacting, until you hit the sweet spot. To find this point, hold your hand under the light, palm down, and move it until it is warm, but not uncomfortable. That is the spot the top of the...

I've never heard of such a ratio, I always learnt to have a fan capable of exhausting the volume of the room 2-3 times a minute, and have a passive intake slightly larger than the size of the fan so the air mixes better. https://www.rollitup.org/view.php?pg=faq&cmd=article&id=229 Please don't...

If you don't have an exhaust, the air you blow in will have nowhere to go. Ventilation isn't about pumping more air in, it's about blowing it out and allowing fresh air to flow in. An intake fan is a waste of time unless you have a truly vast space, let me explain. If there is no exhaust, the...

Don't blow air in. Blow air out from the top and leave a passive intake (hole) at the opposite end near the floor, cool air will flow in. How much the temps will rise depends on how many watts of each light you use. The heat output from t5s is pretty small as I understand it. A hps will raise...

Actually if you're growing with cfls it's more reasonable to grow the plant as tall as you like and surround it with lights. Even a 1000w hps will not penetrate more than about 3 feet of bush, so why grow bigger?

Just switch to flower when the plant is 1/3-1/2 as tall as you want it to be. There's little point in growing taller than 3 feet indoors unless you have extensive sidelighting, as the lower buds will just be shaded by the upper canopy and barely grow. There are plenty of SOG growers who flower...

I think the bleach could well be the problem. Poor little seeds never stood a chance.