Bean Animal overflow or anything better?

[iLMaRiO]

preamble: if unit is not wrote, I assume it's metrical.

for a new tank, 180x80x50, 720 liters raw , I'm planning an external overflow with a bean animal. Anything better than this ? it has to be TOTALLY SILENT.
Which drain hose sizes ? 32mm each ? And what about the return hoses ? 2x 25mm would be enough for Triton Method (10x volume, so 7200 liters per hours they are suggesting).

 

[Chrisv.]

preamble: if unit is not wrote, I assume it's metrical.

for a new tank, 180x80x50, 720 liters raw , I'm planning an external overflow with a bean animal. Anything better than this ? it has to be TOTALLY SILENT.
Which drain hose sizes ? 32mm each ? And what about the return hoses ? 2x 25mm would be enough for Triton Method (10x volume, so 7200 liters per hours they are suggesting).

I‘ve had great luck with the bean animal configuration. Takes some screwing around but I‘ve gotten them very quiet.