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Tried to look it up myself, but without succes. I see ledstrips available with 3000K, 4000K and 5000K. But no strips with 6000K and even higher. Do they exist?

As I understand there are also some brands that have pre-installed and pre-filled tubes. So it is totally DIY. I am not expert, as you might have noticed by the words I use.

Don't you do any venting? How do you prevent smells to escape by creating under pressure? Normally 1500 is about the max for most plants, but because plants don't absorb CO2 in darkness.... mmm, tough question.

How is it possible? Someone comes up with a new product and claims how fantastic it is. And it turns out, it is not! This never happens in the growing scene!

So, no roots in 5 days as they claimed?

I do, but I also have to admit that I do not control that room too much. The experiment is primarily to look at cloning in hydrocloners and what works best. A lot of fun! The strain I even have to look up. Just got some seeds, so I have no clue what the characteristics of this strain are. For a...

My biggest problem is to keep the motherplant 'bushy' and not 'stretched'

I am experimenting with mother plants for a while, and I didn't know this. Thanks!

Then I would wait as well! Wow, that is a lot of money spend. You can put the mylar on the wall, but you could hang is also as a curtain to the open sides.

I would get rid of the boards and use fixtures with bars. Led strips really offer much better light distribution than boards do. The thing is, you need to hang boards higher to get better uniformity. And thus therefore the more light you will waste on the walls. I would create 'walls' around...

Your plants look really nice, I have to say. I personally would design the room different, but if it works for you, it works.

I had a discussion about this in another thread. 'Stale air' and 'fresh air' are ways us humans experience air quality. We feel uncomfortable in a room with a high humidity and high levels of CO2. Then we open a window to let fresh air in and level out the CO2 level. So for example from 1200 ppm...

In principle, the largest source of ethylene in a growroom are your plants, but the plants alone never produce so much ethylene that it is harmful. A harmful amount is most of the time only created when other sources also produce ethylene. The most common sources are malfunctioning heaters or...

I don't get the question... Vent for what?

Of course one should always do what one thinks is right. Even if it is just for ease of mind. But things like 'fresh air' are human judgements. Us humans like rooms where the humidity is not too high and the amount of CO2 is not too high. If we stay in a room where the CO2 is too high for a long...

What is the purpose of posting something without any explanation?

And even those differences are peanuts. 9.2 mg per liter at 68 F / 20 C 8.4 mg per liter at 77 F / 25 C For DO levels a chiller is also not necessary.

a pound per plant tells you nothing. If you have 4 of those plants and from start to finish it took you 10 weeks... Hurray! If you have 1 of those plants and it took you 20 weeks.... boohhhhhhh

Do you also use a CO2 generator/bottles?

Too much CO2 you can control (with the right controller) Too little O2 will never, ever happen.