Quick heater Question

[boatguy]

I am busy buying goodies for my soon to be reef tank. I have a Waterbox marine x 90.3 on the way. I believe it is a little under 90 gallons in total volume with the sump. I already have an inkbird heater controller and will need 2 heater elements. I can get 2 x 100 watt or 2 x 200 watt elements. I live in North Florida (St. Augustine) Thanks!

 

[Uncle99]

Both would work for you.
But 2-200 would work less often.
I’d do the 2-200.
I have twice your water and I use 2-300,s

 

[boatguy]

Thank you. It's only a few dollars difference. I just didn't want to over do it.