Lighting question

[aushepherd]

Is there a real way to tell if your lights are emitting the correct spectrum for corals? I don't want to just throw out bulbs after 6-12 months. And if that's all you can do, where do you throw the bulbs? I think halides are toxic, as with the new energy effecient bulbs. They contain mercury which retards learning capability in small children.

 

[2turtles]

Re: Lighting question

<a href=showthread.php?s=&postid=15248583#post15248583 target=_blank>Originally posted</a> by aushepherd
They contain mercury which retards learning capability in small children.

I knew it was not my fault, this is why I never did well in school, but then maybe it was the smoke, beer, and girls :lol:

 

[stephenrsaiz]

The spectrum of the bulb is determined by your choice (10k, 12k, 15k, 20k, etc).

When you get new bulbs, borrow a light meter, and measure the light output. When the six month mark comes, measure again and compare the intensity between that reading and the "new bulb" reading. If you think there is a significant decrease, buy new bulbs.

As for bulb disposal, check with local lighting specialty stores and see if they participate in a program. I think I remember Anthony Calfo saying IceCap has started a bulb recycling program, so you may want to check their website.

 

[trippkid]

Yeah, I think TFP is supposed to take MH bulbs for recycling, the flourescent bulbs I am not sure about.

Steve is right about the intensity changing and not so much the spectrum, it does change but we are mostly concerned with the intensity of the bulbs. And, a light meter is the only way to measure it.
Matt