DragonPhoenix
Well-Known Member
I'm starting a new grow and currently have seedlings under CFLs. I'm wondering at what point I should make the switch over to my MH lights. When they have 3 or 4 sets of leaves?
Ideally you want MH and HPS bulbs. HPS is fine from seed to harvest, but MH will give plants a better quality of light during veg phase. Switch to HPS when you start 12/12 because the same is true for HPS vs. MH during bloom phase.you can use the mh now but for better results go for an hps.you can use this lamp from seed to flowering without any changing.just go from cfls to hps when the seedling is about 2" tall just keep it well away from from the lamp dependent on lamp wattage.
It's cool that you don't want to use a MH bulb, but don't try and tell people that they're worthless because that is both factually and demonstrably false.fuck the mh and go with hps.there are different coloured lamp bulbs for hps fixtures.mh is a waste of money.(why use 3 different lamps???)
Sodium vapor lamp - Wikipedia, the free encyclopedia
make it easy on yourself.
I recently found a ballast on CraigsList that claims to be able to run both MH and HPS. I'm gonna be limited to 400W total, as I can't do something that will seriously impact our power consumption.Ideally you want MH and HPS bulbs. HPS is fine from seed to harvest, but MH will give plants a better quality of light during veg phase. Switch to HPS when you start 12/12 because the same is true for HPS vs. MH during bloom phase.
To answer the threadstarter's question, you can switch from CFL's to MH as soon as they sprout, just keep them a good 3-4 feet away until they're strong. Or you could keep them under CFL's for the first 2-3 weeks if you're concerned about electicity or heat from the HID.
I have never heard that.You're limited to 400w but looking at two 1000 watt ballasts? You can't run 400w bulbs in 1000w ballasts, you know that right?
Perhaps I was not clear. I have a veg room and a bloom room. The veg room has two 400w MH lights. The bloom room has one 1000w HPS light.You're limited to 400w but looking at two 1000 watt ballasts? You can't run 400w bulbs in 1000w ballasts, you know that right?
Ya can run a mh bulb in that 1000 watter.Perhaps I was not clear. I have a veg room and a bloom room. The veg room has two 400w MH lights. The bloom room has one 1000w HPS light.
I recently found a ballast on CraigsList that claims to be able to run both MH and HPS. I'm gonna be limited to 400W total, as I can't do something that will seriously impact our power consumption.
2 New Sun Systems VI 1000 watt switchable Hydroponic Ballasts
I'm only just beginning to learn about the lighting and photosynthetic requirements of mj, though I'm somewhat familiar with the lighting requirements of aquatic photosynthetic organisms.
That sum'bitch make coffee too?I have a system that runs 400w MH and HPS, it has a switch to turn to either one...and has 110 or 220 capabilities as well.