The 10 gallon tank and lid you have should be safe for your king. I have a 30 gallon with the same lid and there almost escape proof, mine has'nt escaped yet.As a matter of fact when I first got my (lavender albino banana cali king), I had a home-made lid, in which he found a tiny crack and escaped (for almost 3 weeks), but he finally showed up crawling across the floor. So then I got the same lid in which your talking about, and he hasnt escaped since.Good luck.