Ice probes?

[mr_X]

Ice isn't really a fix for a temperature problem, its more of a short term emergency fix. If you have ac, then I wouldn't worry about the temperature so much. Fans will help, and heat dissipation from the lighting will help, as thats usually the main source.

If it starts to get too hot, you can run your lights at night, just reverse the light cycle. Remember, temperatures in the ocean vary considerably by day, and night. I would only start to really worry if you tank starts to hover around 90F while the ac is running.

Ocean temperatures do not vary considerably by day and night. If you keep your tank anywhere close to 90 you are going to lose a lot of livestock.