This project has been completed couple of months ago. Just wanna to share with you guys. Got the plastics containers from Daiso but not longer available. This project cost me less than $10 bucks excludes the filter pump.

Here is the steps :-
1) drill a hole for fitting the piping - top container, including the cover too. I use diameter 22mm hole saw.
2) drill alot of small holes at the bottom for the first & second boxes only, diameter 5mm.
3) drill a outlet hole for the last box, 22mm size.
4) Connect the piping (rain pipe) & stack the boxes together. U can go as high as mount fuji if u like!! .