I just had a very detailed run with SunPulse and just started using Digilux. First off do not use a vented hood with SunPulse, you will be unhappy. They rely on UV light and vented hood glass reflects this and you waste the bulbs. The UV makes the plants 'frosty'. More on this later. Also a vented hood means about a 30% drop from a Hortilux HPS in yield. A open hood (I use a grow wing) resulted in a 12% decrease in yield from a Hortilux HPS in yield, but nice increase in crystals and potency.
The main problem with SunPulse I feel is with the 1000 watt bulbs that they only have made for a short time. The glass might be fine for a 750, 600, or 400 bulb but is too thin for the 1000 watt heat and it bubbles. I had the same thing happen with a 6.4k running 18 hours a day. Freaked me out. But the 4k running 24 hours a day was fine. The 3k and the 10k ran no problem at 12 hours/day, after I got rid of that crappy Lumitech ballast. They and SunPulse do have problems and all SunPulse apparently wants to do is blame the ballast, and all Lumitek wants to do is apparently blame the bulbs. Yet they still list Lumitech as a certified ballast on the SunPulse site. Very shitty customer service from both companies. The guys from Lumitech expect me to drive to them to return a defective ballast, and use my own bulb to prove to them the problem just to have them give me the newer model as a exchange. He slipped and said he could not afford to pay for shipping on returns because they got so many. Hydrofarm (supplier to grow stores) has pallets of bad Lumitek ballasts. Lumitek has NO test or repair at their California warehouse. They just get bulk shipments of crappy ballasts from china and slap their name on them. Already they have had models that caused shorts, but instead of a recall and warning, they just come out with a new model and say nothing. I sense a class action lawsuit in their future. Now they have 'super lumen' switch but do not tell you that overcharging ANY bulb is not good for its life.
And SunPulse rep, condescending and rude. Lectures on how great their product is and does not answer the questions. I had several bulbs that I never even got to put in the light because they all had loose metal parts inside after ordering several from a local store. The replacements took weeks because Hydrofarm apparently dislikes dealing with them. I asked the rep if there was any other way to order any bulbs faster and he claimed he would 'gladly send me one' then never did. But had time to continue sending emails about how great their bulbs were and how dumb I was for not knowing everything he did about light. I responded that if he wants to be taken seriously deal with the poor manufacturing, lack of quality control, shoddy packaging, and nasty customer service if he wants SunPulse to ever be taken seriously.
Then unfortunately found Lumitech ballasts do not like to fire new Sunpulse bulbs and the CPU in the ballast takes too long to kick in. Jason from Lumiteck had went into detail about this very issue online. Then he played like he had no clue on the phone with me when questioned about it. And that first firing is what vaporizes the mercury ball which takes a slightly longer ignition pulse. Lumiteks use a 5000volt pulse followed by the CPU kicking in a few seconds later (hopefully). Unlike Lumitek, Quantum CPU starts immediately. More bulb friendly is what the local grow store calls them. Bought a Quantum which is MUCH better. But the bulb with the bubble (on a Lumitek ballast at that time)told me the 1000W glass is too cheap for the heat they produce, a major defect SunPulse will have to set someone else s home on fire to realize. They come from the same maker of the spinning light systems who brags about how much cooler they keep the bulbs. Perhaps they over designed only for spinner systems and the bulbs overheat in standard hoods.
I too switched to digilux bulbs. Great packaging, and quality you can see as soon as you get the bulb. The HPS runs about 2% brighter than Eye Hortilux HPS and can hot refire if my power goes out. But the Quantum has built into it a 10 minute timer for bulbs if that happens...so double covered.
I would say if you are using SunPulse, beware, unless you are using a spinner systems with auto dimming. Especially beware if you are using the 1000 watt bulbs. The only real great thing I found about SunPulse was the 10,000K spectrum bulb to use the last 2 weeks of flower. Its basically a UV-B bulb that causes the plant to produce resins to protect itself from sunburn. The other bulbs were nothing special. I'm using the Digilux MH for veg and the Digilux HPS for flower and the SunPulse 10,000k those last 2 weeks for now. Until someone else comes out with a reliable UVB bulb for plants at 1000 watts.
Happy gardening.
Soybean Caterpillar