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black light?

Colin

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red lighting works really well.

Blacklights can give off harmfull UV light depending on the bulb.
 

Jean

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oceanbound said:
are their types of blacklights that dont give off uv light??

Black lights ARE UV lights.........cos we can't see them without filters!

UV can be harmful, especially if you're planning to breed, it can cause mutation in larvae. There was an aquaculture facility here that used UV sterilization of water in their abalone and rock lobster hatchery and they were experiencing fatal mutations in their abalone larvae and hugely increased moult death syndrome in their rock lobster, once the UV was removed the problems more or less dissapeared.

Also I'm sure I read somewhere that octopus MAY be able to see UV so that wouldn't encourage activity!

J
 

Colin

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i need cuttle said:
this is a very stupid question, and i knew the answer to it, but what percentage of acentic light is uv, and would all acentic be harmful?

What a strange way to ask a question LOL :lol:

If you mean 'actinic' then it is a catch all name which doesn't have a specific type. There are lots of different makes and some have more UV than others but the tubes sold for aquarium use will not have a UV level which will harm the tank inhabitants.

Probably best not to stare at it for any length of time though :wink:
 
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Jean said:
UV can be harmful, especially if you're planning to breed, it can cause mutation in larvae. There was an aquaculture facility here that used UV sterilization of water in their abalone and rock lobster hatchery and they were experiencing fatal mutations in their abalone larvae and hugely increased moult death syndrome in their rock lobster, once the UV was removed the problems more or less dissapeared.

UV sterilization is actually a really effective and environmentally friendly way to sterilize vast amounts of water. I wonder if they experienced problems because the lights weren't housed correctly and UV radiation was allowed to leak out.:hmm: I was just curious as I'd hate it if people got the impression that using chemicals and the like to treat water instead of UV is a better alternative, because I don't believe it is.

Cheers!
 
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also just a fact... since most of us octo keepers use glass tops on our tanks this poses a problem... black light barely passes through glass! bet you didnt know that! also its the same with water so glass and water cut down on the effects of black lights tremendously. try putting a glow in the dark object under a black light and then put it in a glass box or an aquarium and youll see a huge difference out of the glass or water it glows brightly and in it will barely glow.
 

Colin

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I use UV lights for some of my reptiles and that's why the bulbs have to be in the tank not sitting on top of the tank through glass.


Even with no glass in between the reptile bulbs are normally only effective within about 12" of the animal
 

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