On the topic of lighting

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kog

Feeder Fish
MFK Member
Feb 8, 2009
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Hi, when constructing planted tanks, people tend to aquire ample lighting for whatever plants they may have, but has anyone thought about how the fish may cope with being bomarded with that much light? Is it natural at all for them to be in such a high-light environment? I like planted tanks, but Im not sure how much the fish enjoy living that close to a sun. What do you think?
 
interesting question you have raised..... I want answers too! bump
 
Not all fish like higly lighted tanks. But there are species who even prefer lots of light. Youll have to experiment and see how well these fish deal with the light.

and most planted tanks keepers dont use all of their light for 8-10hrs. Most of them (in holland) use like one tube all day (10hrs) two tubes for 8 hrs, and all their tubes for just 2-3 hrs.

during the peek(?) hours the fish can find cover in de plants.
 
but at peak hours its usually day for them, and they will mostly be active during that time. What about active species that dont stay put?
 
Most planted tanks, even the higher light ones, are probably still not as bright as natural sun light.
 
Unless you're way over lighting your tank (yes, it's possible) then most fish will be fine with what you give them. A few common exceptions would be loaches, especially the clown loach, which get stressed with high light and no where to hide. Just like the clown loach, some fish are nocturnal and really don't like any sudden light.

If you're really concerned about stressing the fish with light I'd recommend getting either a moonlight that stays on at night or a "soft blue" tube that comes on maybe 30 minutes before the rest of your lights and then flip the rest on. And as always, make sure you have a sufficient amount of shady hiding places for your fish so they can avoid situations that stress them out.
 
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