[FishingGoalie]

So this morning i woke up to a tragedy. My lid was half in my tank and my favourite Diamond Watchamn Goby was laying on the floor. I need a better lid rather then just using 48x24 piece of egg crate. I think i need something to clip the lid down so a fish can't just knock it off. I also need some sort of clear mesh like a screen door. Where can i get these materials and what sort of screen should i use?

Thanks
HAyden