Hello,

if you like to replace your 4x160W, then 6 Lightbar Daylight 160 should be sufficient.

One Lightbar 160 has a weight of 3,28 kg.

The best would be to have a stabilizer bar in the mid of the tank - is this the case?
As fixation we only offer our Z-holders.

Another option would be to take several Lightbars 70 and to mount them this way: I I I I ... instead of this: = = =.

Is your tank open? Then perhaps our Mitras LX pendant lamp could be another option...