Hello guys,
just curious cause i just read on silane's blog on using UV light for shrimps.
i remembered for reptile cages, the UV lamp has to be directly exposed to the reptiles in order to aid vitD3 production, is this vitD3 useful to shrimps for calcium metabolism??

also, i read the exposure of UV vs. distance from tube.
most tubes have very little effect after 30cm.. does this matter when we choose tubes?

here is where i got my info from:
http://www.reptilesdownunder.com/rep.../enclosure/uv/

http://www.reptilesdownunder.com/rep...losure/uv/uvSA