What could I use to keep a makeshift cave sunk?
I am making my 5g a freshwater shrimp only tank soon (well shrimp and some free-ride snails I got with my plants from my LFS) and I decided to make my own moss cave for them once I get them in.
I am using this http://www.amazon.com/THERMWELL-PRODUCTS-VX620-Plastic-Guard/dp/B000LNNS3W/ref=sr_1_2?ie=UTF8&qid=1373606543&sr=8-2&keywords=plastic+mesh.
I cut a small portion off to make a half circle and just stuck some java moss on the top and tied fishing line around it to keep the moss on. It was time consuming, but I enjoyed making it and liked the outcome! However, the thing does not want to sink.
If anyone knows of something I could get to make my cave sink (that's aquarium friendly of course) I'd appreciate the insight! I can post a picture if anyone is curious of what it looks like, thanks!