Radium bulbs

[Frank]

I just purchased my Radium bulbs and I just love the look. Does any one know how often they need to be replaced I would like to make note of it. Thanks

 

[RBursek]

For MH about 1 year, depending on how long you have them one per day.

 

[EliteReefs]

you will not get a year otu of a radium no matter what ballast you have them on. they shift color and number rather early compared to many bulbs. i replace about every 7 months and thats long compared to some radium users. the color they give is well worth it IMO

 

[ksc]

Depends on the wattage Radium you are using. You could probably get 14-18 months out of a 250 on a hqi ballast. Mine are 8 months old and I have lost less than 10% of the output compared to when new. I'm getting 1200 on the surface and 5-800 par in the top half of my 90. Just get some decent Lumenxxx reflectors and you'll be good for quite awhile....

 

[WWC Verified Sponsor]

change them every 6 months

 

[revhtree Verified Admin]

7 months is a good rule of thumb for these bulbs.

Which reminds me I need to get some! LOL! Mine are at 7 months now.

 

[Frank]

They are 150W DE current light system, water depth water depth 13". Does any one out there use a live sand bed with out any other type of filter.

 

[LILBUDDHA]

Depends on the wattage Radium you are using. You could probably get 14-18 months out of a 250 on a hqi ballast. Mine are 8 months old and I have lost less than 10% of the output compared to when new. I'm getting 1200 on the surface and 5-800 par in the top half of my 90. Just get some decent Lumenxxx reflectors and you'll be good for quite awhile....

I have never pushed a Radium over 9 months. Those are some pretty interesting numbers u got there. Can you post some new numbers @ ur 9 month to year interval ? I am wondering if there would be any significant changes in bulb degradation .