Luananeko
Aquarium Advice Addict
These are similar to the tubes I have for my crays, seems perfect size: Amazon.com: Fluval Ceramic Shrimp Decor Aquarium Ornament, 3 Tubes: Pet Supplies
These are similar to the tubes I have for my crays, seems perfect size: Amazon.com: Fluval Ceramic Shrimp Decor Aquarium Ornament, 3 Tubes: Pet Supplies
Great pointing those out! Also people use Bamboo pieces, tied together (or glued) and weighted (with a rock I guess.)
It's sensible to liquid carbon?