GGG Posted June 15, 2021 Share Posted June 15, 2021 So a friend of mine has been growing under 600w HPS for just over 2 years and his yield is going down , although his plants are like 10-30cm away from plants. Can the lights be done by now ? Sent from my Hisense Infinity H50 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Fridge Posted June 15, 2021 Share Posted June 15, 2021 Hi, I grew with HPS a long time ago. I had to replace the bulb every 12 months or so, otherwise they loose their light intensity. 1 Quote Link to comment Share on other sites More sharing options...
PsyCLown Posted June 15, 2021 Share Posted June 15, 2021 Most certainly is the bulb, 2 years is a long time for an HPS bulb. As @Pants said typically a bulb would be changed out after 12 months at the most. Another reason to consider LED. 1 1 Quote Link to comment Share on other sites More sharing options...
Ill_Evan Posted June 15, 2021 Share Posted June 15, 2021 53 minutes ago, GGG said: So a friend of mine has been growing under 600w HPS for just over 2 years and his yield is going down , although his plants are like 10-30cm away from plants. Can the lights be done by now ? 100% they are done. 1 1 Quote Link to comment Share on other sites More sharing options...
The_StonedTrooper Posted June 15, 2021 Share Posted June 15, 2021 Max 2 grows, replace HID. 1 Quote Link to comment Share on other sites More sharing options...
GGG Posted June 15, 2021 Author Share Posted June 15, 2021 Thx for the above guysSent from my Hisense Infinity H50 using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
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