Would like to know from the members with large eels like greens, Tesses, and others, how do you keep them in the tank? I built a lid from egg-crate with a plastic screening for a snowflake. I think it will be ok with the lights sitting on it even tho it's light weight. But for the guys with the 4,5 ft+ eels. How do you do it? Please explain and even add pics of the top of your tank and even your eel. Thank you!