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The rule of thumb is 7-10,000 lumens per sq ft, you have pretty optimal lighting. The sun gives about 10,000 lumens/sq ft on a clear summers day. Heat might be a concern, what type of reflector do the lights have? Is it just like a bent sheet of ally attached to the light fitting or something...

I've not used a stanley blower myself, but in my experience the noise of the air rushing through the ducting is a fair bit louder than the fan. If I were running over 1000cfm it'd want to be through at least 10" ducting and probably still want a duct muffler on the end if noise was a concern...

Yes it does, and with hid lighting most grows will need to exchange the air more than once a minute, unless they have low intake temperatures or have a small bulb for the size of the room. Also don't forget to factor in ducting, and any filter you may have. Both will affect the actual cfms that...

Plants flower outdoors under the light of the full moon, so if your box is darker than that you should be ok. I've read that if you can see your hand on the end of your outstretched arm then it is probably too light to be called dark.

I wouldn't say lst is a pain in the ass, but it depends on how much of a lazy stoner you are tbh! Obviously it takes a little more time than just letting the plant grow of it's own accord, but the results speak for themselves. One method I'm working on perfecting is supercropping, which can...

It is perfectly possible, but the fact that you have to ask suggests that maybe you aren't quite experienced enough to do the job yourself. If you're going to do it, read up as much as you can on electrical safety before you start, I'd hate for you to get a nasty shock. Always turn off the...

It's hard to see in the pics but I don't think that top will grow back now. If you cut the top off it won't just grow a new top, one or more of the lower nodes will grow up to become the top/s. Whether you cut the dead top off or leave it there is pretty much up to you. I'm of the opinion that a...

I know biocanna says on the bottle that you don't need to adjust the pH, but it's worth keeping an eye on it. The water you mix the nutrients into will not be the correct pH for your plants, mine comes out of the tap about 7-7.5, depends on the time of year. Another thing that can be a factor is...

Usually after the 5th-6th true node is about right. You cut off above the first or second pair of nodes to give either two or four main colas. More info here https://www.rollitup.org/advanced-marijuana-cultivation/151706-uncle-bens-topping-technique-get.html

Lst is good, but takes quite a lot of veg time. Other methods such as topping or supercropping can reportedly give similar results, with weeks cut off the growth cycle. I'm currently running several experiments to determine what gives better results, and which method I prefer, but results vary...

How long you veg depends on how big you want the plant to grow. A rough approximation is that it will double to triple in size from the day you switch the light cycles, most of which happens in the first 2-3 weeks. Yes, you should use nutes, but not for a while. Mg potting soil has plenty in...

Plenty of people exhaust through their light, it's just less effective at cooling the light than if it has it's own cool air intake. If you have no problems with high temps then you may as well. Last winter I was exhausting out via my cooltube, then gave it's own intake when spring started...

I never cut off dead or dying leaves, as long as they are attached to the plant it will extract energy from them, and drop them off herself when she's done.

You've got nigh on 300w for 2 plants, I think you'll be ok. A more accurate measure is the amount of lumens, optimal levels are 7-10,000 per sq ft of plant. The sun gives about 10,000 per sq ft on a clear summers day.

If you want it on for 18 hours, pick a start time, say 00:00 for simplicity, and have it turn on then. The off time should be 18:00, then it would start 4 hours later at 22:00, until 16:00 the next day. Can you see the problem with your light cycle yet? It won't repeat itself over days or weeks...

Not per plant, per however many plants you have in your growroom. Those two items are a bulb and the components of a ballast (not a very good one either, it says not to mount it more than 2 feet from the light!). A full kit would also consist of all the connecting cables, a bulb fitting and at...

Yeah I would try to get a few cuttings off that new growth, even though it's late in the season to be starting clones, you could let the mother plant flower if you don't take too much foliage off, hedge your bets a bit.

Hey mate, you're fuckin' good.

Your yield will depend mostly on how good you are at doing hydro, it's quite easy to let the pH or nutrient concentration get too high/low which will negatively affect yield. How well you make use of the light will also be a big factor. Good growers can achieve upwards of 1g/watt of lighting...

You seem to be doing ok with the clones, although they are small. I've never had any success with cuttings smaller than about 4". They need plenty of leaf matter to feed off while they develop a root system in my experience, the lower couple of fan leaves tend to yellow, then wither and...