Sorry about the late reply, had a lot of work and preparing for a 1 week vacation in Hawaii
@MonFish Fanatic, Koji, wilkinson
thank you for the advices
Sadly my lfs only have aros for sale once a year so I've to pick one anyway and I don't really mind DE.
@ctoychik
an UV is running, it was set up 3 weeks after the pondarium was filled but I didn't had a powerful enough pump until 1 week ago so it wasn't able to "scan" a lot of water.
Now I can see the improvement going faster, you can see the evolution with the pics in my 1st reply (
http://www.monsterfishkeepers.com/f...sian-arowana&p=5447313&viewfull=1#post5447313)
@Crispy
0,47 inch (12mm) glass. It's with a 0 risk factor, aquarium manufacturers say a factor 3 is better but it would have been some 0,59 inch (15mm) glass which is double the price here
@wilkinson
the filtration is homemade out of 3 63gals rubbish bins with a kind of up/down flow system :
2 intakes at the base of the pondarium (under the 2 big flowerpots) are filling by gravity the 1st rubbish bin from below, it holds brushes
then the water at the top of it fill by gravity the 2nd rubbish bin from below, it holds Japanese mats
then the water at the top of it fill by gravity the 3rd rubbish bin, it holds the pump which send the water through the UV filter (oase bitron 110c) and from it there's 2 exits returning the water to the pondarium.
There's an air pump (hiblow hp40) feeding the 2nd and 3rb rubbish bins.
Each rubbish bin has a purge valve at the bottom for an easy cleaning.
I'll post some pics of my aro once I get it mid december