unless you want to experiment - i would stick with the tried and true HPS.I am using this retro-white bulb right now. I am wondering if I should keep it throughout the grow or to put the old HPS regular in after the first couple weks of flower...wish I knew FOR SURE that this bulb is better than the HPS.
I have had this bulb for over a year but have only used it for 6 weeks so far. It may stay a little cooler than an HPS regular bulb but I am telling you all right now it still gets warm and this wll not be a miracle " summer bulb ".unless you want to experiment - i would stick with the tried and true HPS.
Also - how old is your bulb? I think you be changing out your MH every 18 months at least.
good deal - thanks for the info.I have had this bulb for over a year but have only used it for 6 weeks so far. It may stay a little cooler than an HPS regular bulb but I am telling you all right now it still gets warm and this wll not be a miracle " summer bulb ".
The plants are diggin' the light, and I am glad I got this bulb instead of a standard MH, but definately no miracles here. I am going into flower in about 4-5 days and I'll decide what to do for lighting @ 2 weeks into flower. I will use this retro bulb for first 2 weeks to minimize stretch.
Is that the same thread were you told the guy that he shouldn't do it either? I think you said it was an experiment for you and only someone with experience should try it?.... um, here's actually exactly what you said. "I wouldn't rec' you do this unless you have good enough experience. i did it just to see if I could." yeah, that's the one.Yes... i answered one of your other posts where you claimed that one cannot grow in gravel.
You can't see the difference?Is that the same thread were you told the guy that he shouldn't do it either? I think you said it was an experiment for you and only someone with experience should try it?.... um, here's actually exactly what you said. "I wouldn't rec' you do this unless you have good enough experience. i did it just to see if I could." yeah, that's the one.
I'll drink to that. I am happy with the bulb so far. According to the light spectrum graph it seems like this bulb is better than an HPS for flowering? I may just use it the whole time. I think my HPS bulb is more lumens though..I never said it was a miracle bulb but, what I have said a number of times is the it does the job of both HPS and MH bulbs for much less of a cost, the spectrum is better, the bulb runs cooler and works on a standard HPS ballast.
You mean you are using those funky blue UV lamps ?No point buying one then.
The only reason to want a better bulb in veg' is for faster growth.
I've been vegging two plants under UV 24/0 for 28 days. They are both showing signs of sex. One female and one male.
This is just with UV as their sole source of light.
What I have read about the difference is lumens tied into the distance that the bulb is from the plants canopy. You have to keep the HPS bulbs higher because of the heat. These run cooler, you make up for the loss in lumens because you are closer to the canopy. There was more to it then that but either that's understood, or remembered. I'll go back and get more about it and post it up here.I'll drink to that. I am happy with the bulb so far. According to the light spectrum graph it seems like this bulb is better than an HPS for flowering? I may just use it the whole time. I think my HPS bulb is more lumens though..
Not sure what you mean. It's a tanning lamp. 300w UV.You mean you are using those funky blue UV lamps ?
In which respect does the spectrum have an impact in flowering?I'll drink to that. I am happy with the bulb so far. According to the light spectrum graph it seems like this bulb is better than an HPS for flowering? I may just use it the whole time. I think my HPS bulb is more lumens though..
I'm glad someone brought this up, if you want to get your light closer why not use those 40000 lumen flourescents (T5 or T12, I'm not up on the flourescent term.) I have my 400W hps 8-9" off the top of my plant (notice the singular), with a cool tube, how much closer do you want a HID bulb?So the lost lumens are made up by the light being closer... so, what? We end up where we started? Only paying a little extra for the bulb.