Dave Y
Member
Hi all,
I'm finally swapping out my internal fluval u4 for an external 407. The tank is currently low tech, fairly well planted, fish stocking is pretty low for a 200l tank - its been running for a couple years with the internal filter.
Am I OK to put the biomedia from the old filter into one of the 407 trays and just swap the filters?
Im thinking it should be fine as the tank is well established, but could that cause any issues?
Thanks.
I'm finally swapping out my internal fluval u4 for an external 407. The tank is currently low tech, fairly well planted, fish stocking is pretty low for a 200l tank - its been running for a couple years with the internal filter.
Am I OK to put the biomedia from the old filter into one of the 407 trays and just swap the filters?
Im thinking it should be fine as the tank is well established, but could that cause any issues?
Thanks.