Wierd question???

[TDufrene]

Can I put colored plate glass or colored projector film underneath my 3 150w MH's???? Does this have an adverse effect or negative impact on my reef tank?? I really love the deep blue look at night and even try different colors. Am I changing the spectrum and PAR by doing this or is it the same light just through a colored filter??? I was never good at geography!!!!

That last sentence was a joke!!!! I know that light is studied under the chemistry field!! LMAO

 

[TCUguy]

I know for a fact it would reduce par. How much? who knows you would have to test that. Anything that you place between the light source and the tank will reduce par (even CRYSTAL clear glass or plexiglass).

Now, I am pretty sure it will change the light spectrum because those filters work by, well, filtering out almost every color except the one of the filter. If you really want to give it a go I would only try blue filters. Don't do red as thats known to slow down coral growth, and green isn't used much by corals so don't do that either.

Another thing to consider is just how hot will that filter get. You don't want it catching on fire lol (no... but really).

 

[Guest]

if it is not tempered glass i would not put it under directly under mh

 

[ChuckLawson]

@TDufrene wrote:

It's the same light -- you've just removed the parts of the spectrum that were absorbed by the filter (and turned into heat, for the most part -- use tempered glass for certain); it'll change the color of the tank, but it won't increase the amount of light of that color reaching anything.

 

[TDufrene]

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