the snake is from a hot climate area but why does mine like to soak in the water for long periods of time?
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If you have hide areas in tank and room for the snake to move about without winding up in water than I cant fathom why it would soak. I prefer smaller water dished as kings can be prone to blisters if to wet.
The most I have ever had in 6 yrs has been snake 'hang out" next to water dish is shedding .
BTW yor temp should be fine for your Ca king as is.
I initially said you may need low watt heat pad as Ca kings like heat but stay as is esp since he is eating and looks good.
You must have some nice herps by you. Malaysia has some very interesting never seen for sale smallish type lizard eating snakes.