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| Fish and access to Light http://byap.backyardmagazines.com/forum/viewtopic.php?f=2&t=14206 |
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| Author: | cdm [ Nov 17th, '12, 11:47 ] |
| Post subject: | Fish and access to Light |
do fish grow better in a tank with light or with a lid on in darkness ? |
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| Author: | Charlie [ Nov 17th, '12, 13:27 ] |
| Post subject: | Re: Fish and access to Light |
discussed quite a bit in the past viewtopic.php?f=1&t=13358&hilit=fish+light |
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| Author: | Wickham [ Nov 17th, '12, 17:32 ] |
| Post subject: | Re: Fish and access to Light |
I think sometimes the 'picture' gets lost. Think about fish in nature. They stick together. Have sunny spots and shady spots, let them decide. 'Aquaponics' happens all around us in nature. We really are just going back to basics we are just trying to control it in our own systems. You need to be more concerned about your water temp, the things you are controlling, not nature. Maybe i should have another wine 
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| Author: | Tallman [ Nov 17th, '12, 17:52 ] |
| Post subject: | Re: Fish and access to Light |
Good plan. I think I will too. |
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| Author: | cdm [ Nov 17th, '12, 19:12 ] |
| Post subject: | Re: Fish and access to Light |
ok thanks for the points but it seems nobody knows ... i guess a little filtered light is enough . I have Barra and i am thinking they would normally be in dark water when young hiding out to avoid getting eaten ..... |
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| Author: | TCLynx [ Nov 17th, '12, 21:51 ] |
| Post subject: | Re: Fish and access to Light |
Most fish are fine with a rather dark environment. They need enough light so they can tell night and day apart but otherwise seem quite happy with deep deep shade. Now if you are trying to breed certain kinds of fish, more light could be helpful but just for growing them out to eat in an aquaponics system, they really don't need sun. In expansive pond culture where they bloom algae to feed the fish, then sun is needed to grow the algae but in aquaponics we don't want the algae steeling the nutrients from our plants so it is best to avoid too much sun hitting the water so covering or shading tanks helps. Covers over the fish tank are also to keep debris, children and small pets out of the tank and keep the fish in. |
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