tank temp

I have two inkbirds and they have a 4 degree difference so I need a thermometer to calibrate them. Does anyone use a candy thermometer to check there tank? Or should I buy the Hanna thermometer since those seem highly recommended?

Ok so i know this will give me a huge range of responses but what temperature do you keep your reef tank at? I know fluctuations happen but how hot is too hot and what's too cold? I currently run my tank set at 76.5 and it bounces up to 78 during the day because the ac is set to 78 but i noticed...

Hello all This was posted an another forum recently and I think it's a really interesting article and potentially raises several points worth considering to the very basic husbandry of our reef tanks. http://www.ronshimek.com/salinity_temperature.html Have we been getting the most basic...