Pool sand filter system ???

I saw a lot of guys here with this type of filter. But i don't know anything how it works with bacteria. Its good or not.
Guys who use this for indor pond, big aquarium.... leave coment guys what du you think ?????
I buy mine today for my pool. Its rated for 19000 L pool That is 5019 galons pool. How about aquarium ratings ?
But if is good for Biological and Mechanical filtration for aquariums I don't see any reason whay not to use them ?
Its realy cheap compared to aquarium filters that powerful and big. I pay just 159 €. Not included hose and sand.
Some pics

That filtration people used on extreme Monster set up and no reply's ?
You are kidding me

Yea i saw few on big aquariums with big fish. Crystal clear water + Great bio load.
Down side is
-pump for this type system draw big W compared to other designed for aquarium.(electricety bill rise )
-Pump is noisy.
But this 0.4mm - 0.8mm pool sand filter anything.

Chaz88 said:

I have read some threads, someplace, about people changing the sand so that a smaller more power efficient pump will work.

By the way Slovenija is my favorite place in Europe. Hope I get to go back someday.

Click to expand...

I heard that to. people mod everything
Are you from slovenija or you just visited our country ?
Sure is great place here All fish legal

Chaz88 Salute to you
I'm happy to see other people like our little place.