I got tanks inside and outside the house. The tank tat is outside the house especially the one below my main 4ft tank has water temp at about 30C. No plants inside it. On the other side i have tanks in the first hall...temp is 32C
Bad house planning...no air circulation...Fan...? I got a 120mm DC fan...works like a charm...water now broght to 28C...cant go any lower liao...unless use chiller which is totally absurd to get...

Dunno about shrimps...bought 50++ now i only see about erm 16 or so...

To use an airconditioner to blow ur room and chill ur tank is also not making any sense especially if you are not a Datuk's son. Well u can temper with the meter gadget but u might get caught...and may end up in jail Use methods that you can afford and when its also legal...On the other hand if you are a Datuk's son, by all means...do get an airconditioner and let it run 24hrs...