Hi All,
RWH system is not new idea and if you want a simple DIY system for below RM300 for a 150-300 litre system. I did this for my fish ponds which required clean water (non-chlorinated water). I lived in a single storey terrace house in PJ. My DIY RWH sys is mossie-proof, a simple first flush contraption that cost RM10, which also act as leaves and debris remover. I used double layer filter fibre from my local aquarium shop, charcoal and water pump for for churning the water or refiltering the water in the blue poly tank. The water is clean and clear. I don't intend to use the water for other purpose but if I do later, all I have to do is to add in a better filter & UV light to kill off bacteria. I did all this on a Saturday morning after looking for the blue poly tank/barrel in a plastic shop in old town PJ and plumbing material at my local hardware shop. I may later add in 2-3 more barrels if the water supply gets bad to worse in PJ. Since today is my first day on this forum, I shall add in pictures later. Now all my neighbours also want me to install for them my RWH system.

I'm planning to do a module system where you can have a 2 barrels verticle system or a 2x2 barrel verticle system, expandable to a 3x2 and 4x2 barrel system. Installation by yourself, all fittings, barrels, filters, leaves remover and first flush system will be provided.