Anyone replace older HPS bulbs during flowering and notice a big improvement?

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BRICH999

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Phone acting wonky and doesn't want to copy link but that's the product page for gavita. I'm at about 2 years and getting ready to order another bulb(yearly) and maybe reflector.

Edit: found the owners manual. States every 5000 hrs replace reflector

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Duggy

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If you factor in replacement bulb and reflector costs it makes LED look even better value...
 
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BRICH999

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If you factor in replacement bulb and reflector costs it makes LED look even better value...
Seems unrelated to a question on bulb replacement improvements. But if we are getting off subject my overdue bulb and reflector still work better than my leds did
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Dynodave

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For price it’s not worth not doin I run lumatek 600w 400v dimable,the bulbs are abit dearer but I can tell .I’ve done a fair few grows, My Autos always run 22 hours on 2 off,the 2 off ,I think just help give them a natural break,I have done grows on 24 hours to be honest find the 2 hours off really help,sayin that first 5 days I use 24.
Hope that help u abit bud
Davo


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Unknownterritory

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Can anyone give help me 1 to 1 with a new set up I'm trying I have a 1.2 x 1.2 x 2 tent. 1000w hps adjustable between 400 to 1000 I have normal and auto's on the way can anyone help me out on what to do first and direct help
 

pop22

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HPS bulbs degrade quickly and should be replaced at a minimum once a year. They degrade 20% in the first 6 months on average.

Don't know what you used for LEDs but modern LEDs like Quatum Boards and COB lighting is superior to all other horticultural lighting. HPS/MH is dead technology, within the next ten years ot less it will be gone. Gavita sold its HPS division to concentrate on LED..... that should tell you something.
Buy a bulb, clean the reflector with alcohol and get another year out of it, then take a look at upgrading. With these new LEDs efficiency is now almost double of that of HPS, with Gavita at around 35% efficient, and QBs and COBs up to 60% plus a 50,000 hr. plus life span, LED is actually cheaper than HPS when you factor on annual bulb and reflector changes.

Seems unrelated to a question on bulb replacement improvements. But if we are getting off subject my overdue bulb and reflector still work better than my leds did
View attachment 878122
 

dennis000

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Sep 7, 2019
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HPS bulbs degrade quickly and should be replaced at a minimum once a year. They degrade 20% in the first 6 months on average.

Don't know what you used for LEDs but modern LEDs like Quatum Boards and COB lighting is superior to all other horticultural lighting. HPS/MH is dead technology, within the next ten years ot less it will be gone. Gavita sold its HPS division to concentrate on LED..... that should tell you something.
Buy a bulb, clean the reflector with alcohol and get another year out of it, then take a look at upgrading. With these new LEDs efficiency is now almost double of that of HPS, with Gavita at around 35% efficient, and QBs and COBs up to 60% plus a 50,000 hr. plus life span, LED is actually cheaper than HPS when you factor on annual bulb and reflector changes.
What brand of HPS you bought? In our greenhouse, we use GE 600W HPS grow light, work 8 hours per day , the ppf reduced from 1080umol/s to 969umol/s after 2 years, only degraded 11.3%. Many Chinese suppliers don't know how to make real HPS grow light, they sell HPS street light intead of, the bulbs look same but are different type of HPS.
LED cannot replace HPS in greenhouse, we set 1000w DE at 6 meters high, can get 200PPFD, we also tried Danmark made 630w LED with same distance only get 90PPFD, so is it a smart way to use the power more than 1260w LED to replace 1000w DE HPS? LED only fit to use below 1 meters , the intensity will lose a lot in the air, because the spectrum of LED is not continuous.