SueAndLeo Posted February 2, 2002 Share Posted February 2, 2002 Is it possible for the glass canopy that you buy at the local pet shop to filter out certain rays of the spectrum that you need from your bulbs ?? I only ask this because those canopies are tempered.... I could always get a piece of 1/4" lexan or plexiglass cut to fit instead.... I'm just curious.... Thanks Link to comment
NanoReefer53 Posted February 2, 2002 Share Posted February 2, 2002 interesting point there. Does the tempered glass filter out some of the spectrum ? I'm not sure about plexi-glass though. Will the high heat from PC bulbs close to it melt it ? I know acrylic melts easily. Link to comment
tlyee63 Posted February 4, 2002 Share Posted February 4, 2002 I use glass instead of plexi,easier to clean and wont sag use to have plexi lid for my 90gal and over time sagged so went back to glass Link to comment
Christopher Marks Posted February 4, 2002 Share Posted February 4, 2002 As long as your lights don't get extreamly hot, like metal halides, acrylic is going to be your best choice. Glass tends to filter out more light than acrylic when it is that close. They are both good though in that they filter out UV rays. Link to comment
SueAndLeo Posted February 4, 2002 Author Share Posted February 4, 2002 Thanks... That is exactly what I thought... Link to comment
mikey Posted April 12, 2002 Share Posted April 12, 2002 So how far could a piece of plexiglass be away from my 2 32w pc lights? i was told that i shouldnt use anything between these lights and the water. What should i do? Link to comment
Cam barr Posted April 13, 2002 Share Posted April 13, 2002 who makkes your lights some manufactures make legs that go on ether end of the light fixture that holds them above the waters surface i think they kinda look kool gtg im gointo the fish store lol see ya cameron Link to comment
Dave ESPI Posted April 23, 2002 Share Posted April 23, 2002 The plastic will yellow with age and will NOT block any UV nor will it remail transparent Salt will cause permanant surface etching on acrylic and Lexan if lot removed wit MURIAC ACID or other soloutions. TRUE acrylic will remail clear if in contact with water constantly, byt evaporated Carbonates WILL etch and cause transluscancy. ALSO it will DEFRACT light and a true sepectrum will NOT be recognised deeper than 12 inches in a reef tank. Ron Shimik (spelled wrong I believe..SORRY) spoke on it at MACNA 2000. I would cover my tanks with STARFIRE glass if you can afford it and also it will help to provide a more pure light spectral barrier for your U/V and PAR sensitive animals... PAR = Photosynthetic Acuitave Radiance (sic) Link to comment
Drew Posted April 28, 2002 Share Posted April 28, 2002 i run my 20gallon high, with no lid at all. same with my 46bowfront ive noticed my corals have opened up alot more and are looking better then ever! Link to comment
SD619 Posted May 1, 2002 Share Posted May 1, 2002 Drew, I like the jay and silent bob pick you got on. Kevin Smith's work rocks. Link to comment
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