Sickest Fishtanks EVER!

all the info is on the video over at youtube, unfortunately the guy removed the "how-to" video

About This Video
Simplified fish tank. Volume: Top tank 130 litr...
Simplified fish tank. Volume: Top tank 130 litres. Bottom tank 120 litres.

Submersible biological filter in lower tank helps to maintain clear water. Water change and massive cleaning is minimized. Cleaning is also make simple. Partial change of water and removing of dirt particle, if require, is carried out in the lower tank that include feeding. All rocks and plants in top tank are placed 12cm above bottom tank to allow easy access should siphoning of dirt is needed. Rocks need not have to be removed while cleaning is in progress.
Water current in top tank is activated by air pump.
Fish able to move from bottom tank to top tank without restriction. Mini waterfall in lower tank is to provide extra oxygenation of the water.
The open bottom design allows replacement of plants and decoration as often as you like.
For more video search for FISHFREEDOM. My email: hsk_7@Hotmail.com hp: 98584206 Ho (Singapore)
Thank you.