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hehe well we do not change the air twice every minute. There is no odour problem at all with the fan running at a minimum of 30%. There is something called pressure drop in the system, which brings the ventilation down to a very low minimum. I would be surprised if you can deliver a complete...

With all respect, I still don't see a heat problem with these lights though. In our test grow the temperature doesn't rise more than 2,5 - 3 degrees in a 80x80x160 cm tent with minimal ventilation. Why make it so complicated? Is that just because you use the UV filter and have like a closed...

Don't forget to mention they are also better than you ones you tested (once). "The ones on opengrow" will have at least 7% extra light though ;)

There is no way to tell since you don't share your results unfortunately. Personally I don't judge until I see a result. I'm sorry I'm a bit lost now. The (clean) 5 mm glass you used before only lost (according to your measurements) 5-10%? So thinner is worse? Are you only going to use a 20...

ok, with opengrow down here a few pics of the light and the first test. fltr: - plasma with 100 watt red leds - plasma - MH - HPS All grows were adjusted to the same initial PPFD at plant height. As you can see 180 watt plasma light (this particular model, the STA-40-02) has about the same...

which 400 watt light? If you are referring to the 4 tents picture: the MH and the HPS are both 250 watt. As discussed, if you measure par light in the plasma light it's about the same as a 250 watt MH, a sodium light has far more par light (but a different distribution through the spectrum)...

we expect opengrow and wietforum.nl to be back on-line after this weekend. The brand new servers are in a secure managed datacenter now and just got ready to be installed. This should fix all the performance problems we had with the last hosting provider.

I think it's a jackberry cross he is doing, other tent is KO Kush.

well spotted... those are polinated ;) One tent is a seeds grow.

Opengrow is down because they are moving to new servers, but here are a few pics I took this afternoon ;)

yes it's much more of a hassle because most of the times the plants become too big to lay them down on the net before they show female or male. A thing you could do is take a few cuttings from your initial plants, use one of those for selecting the females (by putting it on 12/12), the others...

260 watt should be quite enough to pre-grow a few anesthesia's together with a lowryder ;). Do you use some forced ventilation under the lights? That takes away a lot of heat. Also keep the humidity at good levels when you are growing close to the lights, those CFL's do get hot. What type of...

Hi everyone. I stumbled upon a thread about I strain I breed so I registered to answer a question. I won't be very active here, apologies for that, but I thought it would be polite to introduce myself all the same. oh.. eh... introduction: I grow, breed and write and smoke it for about 34 years...

I was I stumbled upon your topic searching for another actually, I don't frequent this forum normally ;). I'm the breeder of Anesthesia. You need enough light if you want to veg them for 6 weeks. At 6 weeks, even keeping them close to the light, they are already quite big plants. A long veg is...