SRC Member Cookiemunster Posted February 5, 2004 SRC Member Share Posted February 5, 2004 Hi there, can anyone tell me where I can get customized cut out UV glass? My RIGA light hood glass cracked. Thanks Quote My Humble 4ft tank Link to comment Share on other sites More sharing options...
weileong Posted February 5, 2004 Share Posted February 5, 2004 You might like to try the Lexan Thermoclear, absorbs more than 99% of UV but cuts the visible down to abt 80+ percent. This world is never too perfect Quote Weileong's 4ft tank Part I Weileong's 4ft tank Part II Link to comment Share on other sites More sharing options...
roidan Posted February 5, 2004 Share Posted February 5, 2004 but there is this heat problem....the acrylic may not take extended heat periods well..hehe it can take up to 100degrees before degradation..but if u notice any drop of water on the MH glass will turn into steam immediately..meaning more than 100degrees liao... "Lexan Thermoclear sheet has a continuous-use temperature of 100°C. At the other end of the scale the minimum continuos- use temperature has been set at -40°. However, using Lexan Thermoclear at lower temperatures is possible since the embrittlement temperature is as low as -110°C. " so....not viable..hehehe Quote Advanced Aquarist (March05) Link to comment Share on other sites More sharing options...
weileong Posted February 5, 2004 Share Posted February 5, 2004 I thought it was 270 degs. Ah I see again and it's in degs F heheheh. Quote Weileong's 4ft tank Part I Weileong's 4ft tank Part II Link to comment Share on other sites More sharing options...
roidan Posted February 5, 2004 Share Posted February 5, 2004 in fact, lexxan has many many models that can block UV..not only thermoclear...but most can tahan up to 100degrees only... really bo bian...i last time used one piece...it warped until it fell out of the holder for the glass....hahaha Quote Advanced Aquarist (March05) Link to comment Share on other sites More sharing options...
uncleliew Posted February 5, 2004 Share Posted February 5, 2004 ever thought platen glass of photocopier can absorb uv. please read article from this link http://info.anu.edu.au/hr/OHS/Hazard_Alert...hotocopiers.asp if someone can confirm that, i can spare Cookiemunster a platen glass foc. Quote Link to comment Share on other sites More sharing options...
weileong Posted February 5, 2004 Share Posted February 5, 2004 what are you using now?? Quote Weileong's 4ft tank Part I Weileong's 4ft tank Part II Link to comment Share on other sites More sharing options...
roidan Posted February 5, 2004 Share Posted February 5, 2004 ever thought platen glass of photocopier can absorb uv. please read article from this linkhttp://info.anu.edu.au/hr/OHS/Hazard_Alert...hotocopiers.asp if someone can confirm that, i can spare Cookiemunster a platen glass foc. not very effective also...but helps abit maybe.. but remember they strongly advise not to look at the light and cover the flap when u do your photocopying Quote Advanced Aquarist (March05) Link to comment Share on other sites More sharing options...
SRC Member Tango_Liverock Posted February 5, 2004 SRC Member Share Posted February 5, 2004 Any kind soul pls tell me what is UV glass ? A glass of 6mm would cut-off abt 50% of UV. Isn't it enough ? Anyone know which part of UV is harmful ? UV-A, UV-B, UV-C ? Quote Link to comment Share on other sites More sharing options...
roidan Posted February 5, 2004 Share Posted February 5, 2004 if bro tanggy is here, he will tell u that tempered glass is good enough to block off harmful UV rays but i disagree slightly from him...i find that tempered glass is good for strength and anti-splintering but does not remove UV rays by alot..especially if using 400W lamps...maybe using tempered glass with 150W or 250W may be ok... well...but i dunno..hehe Quote Advanced Aquarist (March05) Link to comment Share on other sites More sharing options...
weileong Posted February 5, 2004 Share Posted February 5, 2004 UV-C is the most harmful. The Ozone layer in our atmosphere actually blocks all the UV-C. Quote Weileong's 4ft tank Part I Weileong's 4ft tank Part II Link to comment Share on other sites More sharing options...
SRC Member Tango_Liverock Posted February 5, 2004 SRC Member Share Posted February 5, 2004 by definition UV radiation is btw one (1) to 400 nm. UV-B is probably (?) btw 290 - 300 nm Notice some MH light fixture claims its UV protected. Just wondering what is the spec of those glass ? Quote Link to comment Share on other sites More sharing options...
weileong Posted February 5, 2004 Share Posted February 5, 2004 UV spans from 100-400nm if I remember correctly. UV-A 320-400nm UV-B 280–320nm UV-C 200-280nm UV-B cause sunburn FYI. Quote Weileong's 4ft tank Part I Weileong's 4ft tank Part II Link to comment Share on other sites More sharing options...
SRC Member Tango_Liverock Posted February 5, 2004 SRC Member Share Posted February 5, 2004 read somewhere tampered glass actually improve UV pass-thru ? Quote Link to comment Share on other sites More sharing options...
SRC Member Tango_Liverock Posted February 5, 2004 SRC Member Share Posted February 5, 2004 Do some search, Though not able to find the suppliers for UV filtering glass, would like to share some info gathered: How UV glass would look like this: http://www.petsforum.com/personal/trevor-j...50WLampFix1.JPG Possible supplier for UV filter glass. Some architecture or building material bros might be able to make query for us: http://www.sekisui.com.sg/product_pages/s-...t/feature4.html UV-A 315 - 380 nm tanning effect UV-B 280 - 315 nm cause sunburn and ocular disorders (eg, snow blindness) UV-C 200 - 280 nm very dangerous components which is stopped by the Ozone Layer Ref: http://www.essilor.com.sg/Library/oof_coatings.pdf Educating if you like reading : Photocatalytic kinetics of phenol and its derivatives over UV irradiated TiO2 http://cheed.nus.edu.sg/~cheakr/Publicatio...angApplCatB.pdf Do post the contact if you know where to get UV filter glass Quote Link to comment Share on other sites More sharing options...
SRC Member Cookiemunster Posted February 9, 2004 Author SRC Member Share Posted February 9, 2004 Thanks for the comments so far brothers. However, can anyone tell me where I can custom cut out a piece of replacement glass? Quote My Humble 4ft tank Link to comment Share on other sites More sharing options...
SRC Member boxfish Posted February 12, 2004 SRC Member Share Posted February 12, 2004 this could be a million dollar question... the most classified info for reefing in singapore Quote Link to comment Share on other sites More sharing options...
SRC Member dersuz Posted February 12, 2004 SRC Member Share Posted February 12, 2004 I am also looking for UV glass for MH, kindly let me know. Quote Link to comment Share on other sites More sharing options...
SRC Member Cookiemunster Posted February 12, 2004 Author SRC Member Share Posted February 12, 2004 I am also looking for UV glass for MH, kindly let me know. sure bro....once I find out I'll let you know too. Quote My Humble 4ft tank Link to comment Share on other sites More sharing options...
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