Well, just to keep updated, Mr. T. is doing just fine... As I've read in MFK Arapaima treads, they are very smart and pickup very fast about who and where the feeding is.
I look into the pond regularly and straight away, he comes over, looks up and waits for a snack. Once he figures I'm only checking on him, he turns around and goes about with his own thing.
Overall, for what I learned about him, he likes the filter splashing in the water. Makes him active and chasing feeders.
Once I switch off the power for cleaning it, he gets in the opposite corner and lies still.
Start up the filter, straight away he goes over checking it out.
Never seen a fish picking up so fast on his surroundings and what's happening. Beautiful sight. Really hope to get started with his bigger pond soon.
For the filter, still the same simple water-drum, 2 openings at the bottom, pumping water in at the top. Instead of the filter-floss/mat, I now put an old towel or T-shirt over the top, hanging down in the middel, then put on the lid and the metal clamp to securely close it. (it's one of those circular clamps that fit around the 2 rims from lid and drum holding it tightly together).
The towel acts as a good filtersock, changing it 2x a day, overnight it's completely brown, so plenty of small rubbish coming out of the water...
The pump-inlet is just above the towel, with a 90' elbow on the inside, so it creates a centrifuge inside, covering the whole towel instead of just 1 spot, before it drips down into the area below.
Likely going to use IC-trays (carbon-fibre) to fill the area below as a place for bacteria to grow.
Couple of pics I made yesterday, while cleaning and pumping out water...


