Spacing for rack tubs?

[Kylegep]

I was wondering if anyone uses cardboard box for tub spacing while building a rack? I have used CDs and the wood swelled and makes it hard to open their tubs. Just need some ideas on what would leave a good gap, but not enough for snakes to get out!

[satomi325]

I've only used CDs.
I wouldn't have the opening larger than 1/8 of an inch.

Are you building a new rack? Have you thought about building it out of PVC plastic?
They don't swell like wood. They are water resistant and lighter than melamine.

[771subliminal]

add a few more cds

[Kylegep]

No, there is no place near me with xpvc.

[Mike41793]

When i made my melamine rack i spaced it with 2 cds and it was perfect.

[oskyle1567]

I couldn't find a place near me with xpvc either but i contacted my local lumber company and they got me an equivalent this stuff called azek pvc sheets. The rack works out perfect so much lighter than melamine but more expensive.

[heathers*bps]

CD's here as well. I'd love me some pvc racks, but Chad complains about the price of melamine, so I could just imagine what he would say about buying pvc