Giesemann Powerchrome Pure Actinic

2405 Views 7 Replies 5 Participants Last post by Newt, Dec 13, 2008

Manwithnofish

Discussion Starter · Dec 8, 2008

I have two Giesemann Powerchrome Pure Actinic T5-HO (39w) bulbs that came with my Tek-Light system which I never installed. It was my impression that these bulbs were for Reef tanks and would result in bad things (A word) in a freshwater tank.

Is that correct?

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bigstick120

· #2 · Dec 8, 2008

They wont do much in terms of photosynthesis for plants.

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freydo

· #3 · Dec 8, 2008

yeah... you're better off to see if you can exchange them for the mid-day or plant bulbs.

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Muirner

· #4 · Dec 8, 2008

what about if one of these bulbs was used as a night light on it's own timer and switch. Would this cause problems?

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freydo

· #5 · Dec 9, 2008

i think the bulbs would be too bright for a night light. they're essentially a standard fluorescent lamp, just different light spectrum.

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Manwithnofish

Discussion Starter · #6 · Dec 10, 2008

Ok, they don't do much for plants (photosynthesis)....but will they encourage the dreaded Algae growth? I thought I read that the blue light leads to Algae.

If I just want a "color" change because I like it, I could have 3 daylight and 1 pure actinic?

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freydo

· #7 · Dec 12, 2008

if the actinic is just purely for aesthetics, and you have sufficient "proper" lighting, i don't see a problem having it in the tank.

i'm not sure if it will encourage more algae growth than any other lamps. i highly doubt it.

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Newt

· #8 · Dec 13, 2008

Pure actinic are around 460 nm and this is just outside the range of photosynthesic activation.

I do know that if light beyond the red action spectrum actually turns off photosynthesis. I dont know if this holds true for the blue action spectrum.

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