henward Posted January 18, 2012 Report Share Posted January 18, 2012 does anyone know, say a light tube with 6% uvb and 27% uva... how much of those uv rays will penetrate through water and how deep? say the tube is just on the water line OUT of the water. Quote Link to comment Share on other sites More sharing options...
Squirt Posted January 18, 2012 Report Share Posted January 18, 2012 I was reading on a turtle forum, that UVA or UVB (can't remember which) doesn't penetrate the water very far. Edit a few links worth a read http://www.turtleforum.com/forum/upload/index.php?showtopic=143740 http://www.austinsturtlepage.com/Articles/guidetolighting.htm Quote Link to comment Share on other sites More sharing options...
henward Posted January 18, 2012 Author Report Share Posted January 18, 2012 awesomne article thanks Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted January 18, 2012 Report Share Posted January 18, 2012 There are as heap of critical factors with UV. Temperature of the tube, distance from the water, clarity of the water etc. With all that the answer is: only a few mm. Quote Link to comment Share on other sites More sharing options...
Squirt Posted January 18, 2012 Report Share Posted January 18, 2012 When are going to tan your arowana? Quote Link to comment Share on other sites More sharing options...
GrahamC Posted January 18, 2012 Report Share Posted January 18, 2012 I only scanned this paper briefly http://www.int-res.com/articles/meps/144/m144p109.pdf but I found a few sentences that say 1% of solar UVB is found at 3 - 9 m depth depending on location. Quote Link to comment Share on other sites More sharing options...
Squirt Posted January 18, 2012 Report Share Posted January 18, 2012 There's no way I'm going to read that :slfg: , but is that using sunlight? I assume sunlight contain more UVA and UVB than a UVA/B bulb at most likely 6% or 10%? Quote Link to comment Share on other sites More sharing options...
livingart Posted January 18, 2012 Report Share Posted January 18, 2012 :slfg: Quote Link to comment Share on other sites More sharing options...
GrahamC Posted January 18, 2012 Report Share Posted January 18, 2012 I guess we can extrapolate to the tubes in question and say that 1% of whatever might reach 3m but won't have any biological signficance. Lower frequencies of UVB exhibit rapid fall off in the first 5 mm of water. Quote Link to comment Share on other sites More sharing options...
henward Posted January 18, 2012 Author Report Share Posted January 18, 2012 I am gonna start tanning arowana end of month, one more photo shoot, then tan it. i think i may have to put the tanning light under water as opposed to above reading all the articles, reflection alone is a huge factor of reducing UVB. Quote Link to comment Share on other sites More sharing options...
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