Watch out here they come

[Beverly]

I would go bare bottom on both tanks.

For the 25g, you do not need a 200w heater. I would go with two 50w instead. In the 10g, I would only use one 50w. Haven't used Visi-therms. Have not had problems with Tronics in any of the tanks we've used them in during our many years of reefkeeping.