Does glass cover reduce efficiency of my lighting?

richardsantink

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Apr 3, 2005
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just outside of Ottawa, Ontario
Hi folks,

Another post in this forum reminded me that I wanted to post this.. namely, I want more light for my buck. However, I don't have the budget constraint, so I will be looking into a new lighting system altogether.

What I'm wondering, is how much light and I losing via the glass cover of my 125g tank? Within a day after cleaning it, the salt creep is starting to show, and within a week it basically looks awful.

I'm wondering if I suspend my light about 4" above the surface, while removing the covers (I encourage 'evaporative cooling' as it's a cold-water tank), if the resulting unimpeded light would be anything more than marginally better. Overall, I like the access, and appearance better anyways.

Thanks,

RAS
 

Sintei

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Aug 8, 2006
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Just remember, more light equals less wiggleroom (nutrients, co2, algea etc).
 

Tom Barr

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Jan 23, 2005
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I think 5-10% reduction in light is safe amount estimate for glass lids.
Ploycarbonate is less, you might consider that.

Regards,
Tom Barr