Which one was that ruskull? My hood is just one of those regular plastic ones with the punch outs at the back. It's an aqueon.
I use my 30 inch Coralife fixture on it's legs above my stock Aqueon hood and it works fine. I was going to buy a glass top for the tank but it's not necessary. If it works don't fix it.
Of course it's not exactly the same as your lid but it's probably similar. That's why a low cost, low light option would be the Solarmax single bulb unit. It's only like $25 dude, if you don't like it you can still keep it as a spare. A new bulb for your existing fixture is probably around $15 anyway.
Here's your options:
1. Replace your existing T8 bulb for $15 (Probably around 15 watts)
2. Get a Solarmax single T5 bulb fixture that will probably work with your hood for $25 (24 watts I believe)
3. Get a Solarmax dual T5 bulb fixture which includes LED nightlights and will probably work with your hood for $55 (48 watts I believe)
4. Get a CurrentUSA dual T5 fixture but no LEDs for about $65 (really uses (2) 24 inch 24 watt bulbs, so it's 48 watts)
5. Get a Coralife dual T5 fixture for around $90-100 (uses (2) 30 inch 31 watt bulbs for a total of 62 watts)
Measure the size of your exiting light, check the size of the Solarmax single unit to make sure it will fit, & be done with it. It's $25 for heaven's sake............unless you want more light than 24 watts.
Just for the record I don't work for Solarmax, I've never owned one, and no animals were hurt in the making of this post!