@ Flute, thank you very much.
I used a tungsten sawblade to cut lavarock in half.
Then used the lavarock halves to build mij background in the 125 x 50 x50cm. tank with silicone glue. Not all the way to the
bottem glassplate. I left the lavastones on the bottemplate loose. This makes catching fish easy, just lower the waterlevel and
take out the loose stones.
In this way i hid the powerfliter.

I used a tungsten sawblade to cut lavarock in half.

Then used the lavarock halves to build mij background in the 125 x 50 x50cm. tank with silicone glue. Not all the way to the
bottem glassplate. I left the lavastones on the bottemplate loose. This makes catching fish easy, just lower the waterlevel and
take out the loose stones.





In this way i hid the powerfliter.