Question about media in Trickle box system

Jelesey

Feeder Fish
MFK Member
Jan 19, 2015
49
0
6
Philippines
Hi there I have a 250 galon tank... I use a 5 ft trickle box filter w/ 6000L/hr Pump. The trickle filter has 4 layers and 4 colums totalling 16 trays. What Media should I place in the trays?

Currently what I have is:
1st layer = 4 Koi/Japanese Mats ( to help distribute the water)
2nd layer = Filter Pads
3rd Layer = Ceramic Rings 8L in total
4th Layer = 4L Ceramic rings and 4L Sea Chem Matrix

I currently have an arowana, flagtail and blue emperor, I'm planning to add 5 discus fish.

Any improvements I can do? also anything I can add to help w/ nitrates?
 
zoomed.com
hikariusa.com
aqaimports.com
Store