Anyone here has any idea how much installing one would cost in SGD?
Also the price to maintain it, change filter etc.
In the long run,is it cheaper than buying RO water from NTUC etc? By long run I mean at least 2years.

Currently I do water top up for my shrimps at a rate of about 3L per week. The water cost me about $1 each time.

That would make it about $104 for 2 years of water.