JackJackJack Posted October 11, 2003 Report Share Posted October 11, 2003 anyone tried this? i know its not really anything like the fishes natural environment but i have some ideas id like to try. so has anyone experimented with lighting underwater and did it cost much and was it hard to set up? Quote Link to comment Share on other sites More sharing options...
CraigJ Posted October 11, 2003 Report Share Posted October 11, 2003 Hi JJJ Havn't tried it but would probably produce a cool effect... Don't know if it's true or not, but I read somewhere that fish use the light to swim "up the right way" so if it is wouldn't the fish then start swimming upside down... :lol: Be an interesting experiment to say the least.. Quote Link to comment Share on other sites More sharing options...
Chris.L Posted October 11, 2003 Report Share Posted October 11, 2003 You can buy special underwater lights from the petshops. They come in different colours (yellow, red, green, etc) and it looks really cool if you have them in a cave or something similar. I have one in my tank and it looks really nice under the log. Chris- Quote Link to comment Share on other sites More sharing options...
JackJackJack Posted October 12, 2003 Author Report Share Posted October 12, 2003 how much did it cost chris? yeah thats what i was thinking, have a red light inside a cave, that way it wouldnt bother them because its red, is that right? Quote Link to comment Share on other sites More sharing options...
Chris.L Posted October 12, 2003 Report Share Posted October 12, 2003 I have a yellow one on. I think it was about $100. Quote Link to comment Share on other sites More sharing options...
spent Posted October 12, 2003 Report Share Posted October 12, 2003 Fish have colour vision, hence their bright markings. So red light will bother them no less than any other frequency of light. And don't quote me on this but I would assume fish to be geotropic (gravity dependant) rather than phototropic, as they maintain orientation with the aquarium lights switched off. More likely it's to do with the location of their swim bladder above their centre of gravity though. Quote Link to comment Share on other sites More sharing options...
Ira Posted October 12, 2003 Report Share Posted October 12, 2003 I doubt the fish would swim upside down if the light was under them, but they DO orient themselves to the light at least partially. I had a tank that would just get light from the side early in the morning(No tank lights yet) and when I was leaving for work I'd look in there and see them all oriented vertically with their noses or tails pointing almost straight up. Quote Link to comment Share on other sites More sharing options...
spent Posted October 12, 2003 Report Share Posted October 12, 2003 interesting. What species was that Ira? Quote Link to comment Share on other sites More sharing options...
Ira Posted October 12, 2003 Report Share Posted October 12, 2003 I don't remember specifically which species it was, there were several that did it, the tank had cardinals, rummy noses, WCMMs and serpaes in it. Quote Link to comment Share on other sites More sharing options...
ajbroome Posted October 12, 2003 Report Share Posted October 12, 2003 Ira said... >... they DO orient themselves to the light at least partially. Laterally compressed fish, such as Angels and Discus will often lean to one side if there is a strong light source from one direction. For millions of years, light has always been 'up' as far as fish are concerned... Andrew. Quote Link to comment Share on other sites More sharing options...
Kriber Posted October 12, 2003 Report Share Posted October 12, 2003 My swordtails and Kribs orient themselves towards the light in the morning as well (b4 tank lights come on). Maybe its just easy to notice in larger slower moving fish, then again zebra danios would look like utter nutters if they reponded to the light more strongly than gravity. Quote Link to comment Share on other sites More sharing options...
Chris.L Posted October 13, 2003 Report Share Posted October 13, 2003 mm .. I do notice sometimes they lean to the side. Quote Link to comment Share on other sites More sharing options...
ChrisMack Posted October 26, 2003 Report Share Posted October 26, 2003 Back to the topic.....I was "doing the rounds" (like evreyone does) yesterday, and saw an Underwater Light unit at Animates Christchurch (Moorhouse Ave store) the price was $50 (well ok $49.95 to be precise) :lol: The box showed it as being suitable for Aquariums as well as Outdoor Ponds. Not sure of the size of the actual light unit but the box itself was approx 10 x 10 inches. So to do this kind of thing ( That I imagine would look really nice if set up properly) I would imagine that you would need a rather large tank..... Cmack Quote Link to comment Share on other sites More sharing options...
Ira Posted October 26, 2003 Report Share Posted October 26, 2003 Most of that volume probably would have just been empty box and likely more than half of the unit would probably be a transformer that would sit outside the tank. I'm guessing it's a 12 volt light. Quote Link to comment Share on other sites More sharing options...
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