Changing out Metal Halides

[mobyreef]

Here is an issue I deal with every year.
I have been keeping reefs for almost 20 years now and I am aware that it is recommended to change MH bulbs after about 12 months. But, I am going on 17 months on my 250w Radiums and I am still having great coral growth!
Admittedly, I did finally get the automatic feeder set up 2 months ago and have noticed an increase in growth from that. However, I don't see any reason to replace the MHs yet. Usually I would change them after 12-14 months whether I noticed any degradations in color or not. BTW, I do have a color temperature meter and they still are putting out 20k. I don't have a PAR meter though.
Just thought I would put this out there for discussion or to see what insight others may have.

 

[revhtree Verified Admin]

Well if it is working for you then great! It would be interesting to see what your par readings are right now versus new bulbs.

 

[REEFKEEPER10]

I would have the extra bulbs on hand but if your still seeing good color from your corals I would leave it. You know the saying ( don't fix what don't need fixing). I would say this maybe one of those times. Lol

 

[mobyreef]

Well if it is working for you then great! It would be interesting to see what your par readings are right now versus new bulbs.

I would be interested also... if I had a par meter.

 

[mobyreef]

I would have the extra bulbs on hand but if your still seeing good color from your corals I would leave it. You know the saying ( don't fix what don't need fixing). I would say this maybe one of those times. Lol

I have already purchased replacement bulbs a month ago but haven't installed them yet.