HPS 600 Watt Grow Light Bulb E39 1150μmol Ultra PPF 20% to 40% PAR Increases Concentrate on RED Spectrum 90000 Lumens High Pressure Sodium 2-Pack

It works, just make sure you already have a 600watt ballast

I have not tried these yet. For the price they are a good value. They look and function as they should. Typical heat output and brightness for hps. I haven’t been able to test the lifespan for these bulbs yet but I will update .

These are top notch. I've been growing for years and I'll put this up against any top brand. Never had a problem once. Super bright and heavy yields. I run these for about 5 grows then replace. They come in a padded box and it's fast shipping. High quality lamp.

Plants are responding well. I used Eye Hortilux but they qult making them. Everyone wants you to go to leds. I don't want to yet because it's mostly the high dollar leds that provide a good harvest. Cheaper leds need replaced every couple years. Must be bright enough and the light must be of good quality because my plants are doing a lot better than I initially thought they would.

Been a grower for 30 years, ive used em all. This bulb dollar for dollar at 90,000 lumens and my plants have reacted best to these exact bulbs for past 3 years and 7 grows. I use 1 in a susnsystems 6 inch vented hood with glass shield. My quiet inline fan from vivosun sucks the heat right out of that hood. Hps is and always will be far superior to LED lamps that turn on and off so many times per second, we cant see it but the plants can amd you get these ridiculous woody stems at 4 to 5 weeks in the grow stage. Ive had it happen twice and when I grow I cant afford to have problems. Thats why I go hps every time and NEVER have problems. Any questions