How do you tell old bulbs from new?
- Thread starter Star Dog
- Start date
Maggs707
Well-Known Member
You can get a PAR meter on Amazon for $30
Really? I thought that it would have been a specialist tool £££, I'll look into them, thanks
Maggs707
Well-Known Member
Sorry bro, I was thinking of a LUX meter. Check this video out on youtube though, there's an app that converts your lux readings to PAR.
Maggs707
Well-Known Member
Keep me posted bro! I downloaded it and haven't used it yet either lol. This whole time I have been using a LUX meter and thinking it was PAR. OopsWell you heard the price of the PAR meter, it's good to have a something that we can work from at least, I've downloaded the app but I've not had a chance to take any measurements, it'll be interesting to see what difference there is.
The Gram Reaper
Well-Known Member
HPS bulbs will have black on both sides of the tube inside them, this black grows as the bulb gets more burnt out. An old bulb will have a brown dingy look instead of a clear glass look. Also, some old bulbs have a silver burn on them around the base. Running bulbs hot, like with open hoods and low airflow, will shorten the lifespan of the bulb greatly.
Chemdog1989
Well-Known Member
Yup they kinda get burnt
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