"Is your tank in the air-cond room? What is the temperature around the tank? Can you feel the heat?quot;

The tanks r in the hall, n no dont fell the heat if my main door n windows r opened. If we all go out for the day can feel the hall is quite warm.

So can tell from abv the hall is not aircon

the 5footer has 4 dc fans blowing,temp is 27-28, wif 2 MH lamp.
the 3footer has 2 dc fans, temp is 27-29 ( because the ehiem
pump is genearting heat, btw 3footer is a marine tank wif one MH lamp

also posted in the equipment section lobang for MH bulb