jumpincactus
Premium Member
Supporter
- 11,609
- 438
Indeed they do and they definitely fit the bill of high PPFD lighting!!!cobz rock :cool:
For sure, I have come to realize for me 1100 is money. I never hit 1500ppm for one. 1400 maybe on saturation. I found out that anything over 1500ppm is counter productive not to mention costly. Running 1500ppm takes 2.5 days to kill a 20lb bottle. My exhaust filter is right next to my intake filter for veg so I actually keep veg co2 around 700-800. The only time where I have read that super high co2 was useful was some pest. But that's for discussion.Very nice @Leew421 I appreciate your sharing that. Typically with heavy ppfd and CO2 you can run temps from 85-90 deg F during lights on. What I find interesting was a study out of Purdue U that shows that many of the folks that profess that CO2 needs to be 1500 ppm or higher according to this study is not correct. There is as shown in the study a total saturation point to where it is actually counter productive to run gas at this level as the plant simply cannot utilize these levels and is a waste of gas. Seems the sweet spot is around 900/1000 ppm
I will look in my info vault and see if I can pull up the peer reviewed study for your review.......... :D Peace
I had some p600s and didn't like them. The spydr is very true 4x4Awesome thread and I think everyone is on the money with their comments.
I'm not convinced leds are there yet as far as ppfd per square foot. I see too many led manufacturers claiming a certain footprint for their fixtures when the edges are not sufficient to grow well. For example the platinum led I bought uses 385 watts and grows killer bud directly under the light. However that footprint is only 1x3.5 at the most. Platinum claims 3x5 footprint for that light. Sure it grows that wide but those outside the 1x3.5 are not quality at all. So I made the switch to cmh. When comparing actual cost, watts, footprints and par the leds just don't match cmh and hps, but I believe someday they will.
The 600 is what I had too. Not impressed at all. I could have ran a 400 hps and gotten much better results on the entire footprintI had some p600s and didn't like them. The spydr is very true 4x4
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?