jamestothemax Posted May 14, 2006 Report Share Posted May 14, 2006 Hey lighting gurus can anyone help with a suggestion of what type of glass to use to protect a metal halide bulb in a giesseman (spelling?) light hood. Its a 1000W light hood and we have tried going to a local glass place and they gave us "heat resistant" glass and the two times we have tried they have both shattered into the tank. Which is nto cool considering the tank is 1.2m deep and thickly planted, so very hard to get glass out. Any suggestions would be great cheers Quote Link to comment Share on other sites More sharing options...
suphew Posted May 14, 2006 Report Share Posted May 14, 2006 I just replaced the glass in my 250wMH lights (3 of them) I used toughened glass since thats what the glass place told me my old glass was (showed them the broken bits ) has been working fine for a couple of months now. was cheap to, about $10 per light. Do you get any water splashing onto the glass? I have broken two of mine but both times I splashed water on the hot glass. Quote Link to comment Share on other sites More sharing options...
jamestothemax Posted May 14, 2006 Author Report Share Posted May 14, 2006 cheers i might look into that stuff. nah no water splashing onto it as the light is about 1m above the water surface. Quote Link to comment Share on other sites More sharing options...
KP Posted May 15, 2006 Report Share Posted May 15, 2006 1m thats some serious distance. I could do a dive into your tank and not get the lamp wet Quote Link to comment Share on other sites More sharing options...
Ira Posted May 15, 2006 Report Share Posted May 15, 2006 1 meter? What are you wanting the cover glass for? Just to protect the lights from splashes? Are the DE metal halides and you're wanting it to block UV? I thought you were talking more like lids on the tank, but no way you'd be overheating the glass and breaking it with the lights 1 meter away. Quote Link to comment Share on other sites More sharing options...
jamestothemax Posted May 15, 2006 Author Report Share Posted May 15, 2006 KP: yeah you could definately dive in the tank i know some people who have !!!! Ira: Only reason im wanting to cover it is because it came with a covering so figured it must need one to stop any water thats evaporationg gettign into the light hood and wrecking it. the bulbs and stuff arent cheap as im sure you know so dont want to have to buy more of them than i have to. if you dotn think its neccessary to have the glass in teh light hood i wont bother. the tank is open topped so a lot of water does evaporate out of it as the light creates so much heat at the water surface even being a meter away and its a discus tank so the water is sittign at about 29 degrees anyway Quote Link to comment Share on other sites More sharing options...
suphew Posted May 15, 2006 Report Share Posted May 15, 2006 DE (double ended) bulbs need glass because they put out tons of UV, SE (single ended) bulbs have there own glass (hence the larger size) so dont need glass. If yours are SE and 1meter away from the water I reackon all the glass is doing its blocking light. Quote Link to comment Share on other sites More sharing options...
chimera Posted May 15, 2006 Report Share Posted May 15, 2006 If yours are SE and 1meter away from the water I reackon all the glass is doing its blocking light :lol: 1000W thats sure some intense light, but seems a waste having them so high? gotta pic of ya tank? Quote Link to comment Share on other sites More sharing options...
jamestothemax Posted May 18, 2006 Author Report Share Posted May 18, 2006 hey no pic of the tank but if you pop into jansens at botany downs you'll see it. thanks for all the help guys. Quote Link to comment Share on other sites More sharing options...
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