So here's a little about the tank and equipments. 30cm crystal glass cube tank Ai prime HD Hagen aquaclear20(broke down)/Fluval c3 hang on filter Jebao sw2 wave maker Tunze osmolator nano (auto topup) ANS1000 fan Kamoer X1 doser Despite my title saying this is a simple tank, I know some.of the listed equipments are not cheap. Most of these equipments are spares. So I basically just threw them all together and set up this tank. I do not need a chiller for a small tank like this because i can easily keep it cool enough with a fan. But with running a fan, the evaporation would be very high, so an Auto Top Off system becomes an essential for the tank to keep the water parameters stable. Without the ato, I would have to worry about salinity swing daily. For the doser, I could have done without it. But because I am a very lazy reefer, I decided to jump get this very cheap doser. Just so indo not need to mess with the tank daily. Sent from Singapore Reef Club mobile app