flex watt

On a rack w/tubs what size flex watt do you think I should use?

3" or 4"

I was going to use 4" or bigger to get more heat but let me know what I should do.

Thanks

4" has always worked for me for 28qt tubs.

That's what I'm thinking I will use, it should help heat up the ambient temp in the tubs up more too.

Thanks for helping me decide.

My ambient temps get down a little cooler than I'd like at certain times, so I actually parallel wired 2 4" flexwatt pieces side-by-side so that I actually have almost 8" of belly heat. Works great!

Just a thought...