ok heres what you need
1 length of half round guttering.
2 guttering end stops
1 light
1 controller
1 tube silicone
1 roll silver/tin foil
1 pot D3 glue (not shown because i have ran out)
tools
saw
mastic gun
wallpaper roller
paint brush
ok so take your guttering and cut to length
take your glue and paint it onto the inside of the guttering. then lay on your foil shiny side up and press on with the wallpaper roller.
next attatch your stop ends to the sides of your tank at an angle similar to this. as you can see this isn't the side of my tank but this is a quick demo. to attach your ends use the silicone.
now if you have a strip light from the DIY store then you may want to attatch the light into the ends before sticking it onto the tank. especially if it is one of the ones with the aluminium frame. if its just the clips for the light then you can do it in any order. anyway
once your ends and/or light is in place. leave the silicone to dry for at least i would sy 72 hours just to be sure its a nice strong hold. then all you gotta do is take your guttering and clip it in place. this should create a reflector and a shield for thr lamp.
be sure that the angle of the shade and the positioning of the light within isn't going to let splashes in or electric out. and be sure there is a gap between the lamp and the shade you dont want it to melt.
i hope this gives you the info you needed. please let me kn ow what you think.