Hopefully can be this neat and clean after few years.. This is a photo before I use the rack.. I added 1 more 2kg bag inside to make it totally filled. Hopefully with the rack, there is more flow to the media and it will have less debris trap between the nets previously.. This is how the rack looks like.. can stack 18 balls per rack. Each rack bottom got a screw which can mount on top of the next rack.. I guess can customise the height so can fill more balls in a single rack but cause my friend help me to print, I jus took it as it is. The last row I can’t squeeze in a 3x3 rack and hence he printed a 3x2 rack too. Sent from my iPhone using Tapatalk