After somone posted about watching their fish after lights out I thought I'd share a guide to fitting a moonlight system to your tank.
The light is a dim blue (when setup right) that dosnt disturm the fish's normal sleep patterns and allows us to watch what they are upto at night

Some bulbs are available to replace one already in the tank - however, my tank cant turn the bulbs on seperatly... and my plants in some tanks need all the light they can get. So I decided on an add on.
Have a look on eBay for 'Cold cathode' they are popular for PC case lighting and are ideal for the moonlight application.
Here is what I got...

all you then need is a mains voltage adapter

The tank I've just fitted these to actually have a clear waterproof panel between the bulbs and the water, so I've fitted them to that. It would be just as easy to fit them to the inside of a hood


I've taken this off and fitted the neon tubes onto it.


having drilled a hole through to the gap in the back of the lid, the wires are parred through...

The screen was then placed back in the lid and the wires threaded to the power supply...

The voltage can be adjusted using the mains adapter to a suitable level.
I have mine setup on a mains timer to come on 2 hours before the lights and 2 hours after the lights of out.
I'll take a few piccys of one of mine tonight and add the pictures tomorrow.
If any one is interested, I've just put a couple of kits together that have a brightness control on them and come with the power supply ready to go.
£25 including instructions, fittings and P&P.