I was thinking of connecting the hoses from the external to the existing pipework.Bit of diy involved but doable.
Might just go with an internal tho as an easier option.Eheim Aquaball 130 looks ok.
Ive just bought a 620 tank 90lt.Its a nice tank good quality but i find the pump noisy.
Is anyone using an external or even internal filter that would be quieter ?
I think the best solution would be external and use the existing filter setup has anyone done this ?