2 years ago i have 3ft reef tank with chiller,then decomming due to work commitment. I know chiller is a must to keep corals, thats why now im gonna to keep fish only for my tank (same tank)..now its 2 month cycling. One day my hands so 'gatal' wanna buy coral, and i did. I bought a cheap coral frm iwarna around sgd15..dont know the name (green polyp) maybe.i dip the coral and i put in the tank..it start to open 2 days later, and now its already fully open..now i hv 3 corals 1 anemone and 1 clownfish also below sgd15 in my tank..still scared to go for expensive one..My temprature between 30-31c..dont know if its short term or long term..or i just been lucky.but at least i've tried..