substrate was slimie

ok guys and girl whats your ideal bedding for a rtb disply cage been been useing repibark stuff this morning i was spot cleaning this morning and the bottom layer was all slimy so in the trash it all went cleaned the tank (its a 75 gal glass) with f10 right now shes in a rubber made tote (that is there feeding tank)
so i need to run and get some new substrate what should i get ????
Shes a year old and a great little girl

I haven't had "slime" issues with reptibark. Then again, I don't need to mist it.

You could try aspen. Or plain ol newspaper.

I've found Critter's Crumble to be awesome...