Anyone have DIY cave ideas?

[Zebvance]

chicken wire and plaster

[Zebvance]

and it shouldnt float either

[bschulle1]

what if you make a shell out of chicken wire, use silicon and some decent size rocks to cover some areas and then attach java moss to other areas, i think that would give a great illusion of a solid cave while providing wonderful hiding areas for smaller fish in the java moss

[TonyO]

The foam is also used in tanks for animals like frogs. I used it to put together a tank for poison dart frogs, but I ended up never getting the frogs.

I think there may be a couple of different kinds, though I may be confusing it with the silicone I used to cover it.

[fshfrk]

I get a big 10,20,30, or 40lb rock or bigger. Take my concrete saw with a 14" diamond blade and make multiple cuts to hollow out the bottom. Finish it up with a grinder and a chisel. Reduce the weight of the rock by 50 percent. I've only made 2 so far and wrecked another one by getting a little to aggressive. I need to practice more but that saw will wear you out.

[Cesar]

I get a big 10,20,30, or 40lb rock or bigger. Take my concrete saw with a 14" diamond blade and make multiple cuts to hollow out the bottom. Finish it up with a grinder and a chisel. Reduce the weight of the rock by 50 percent. I've only made 2 so far and wrecked another one by getting a little to aggressive. I need to practice more but that saw will wear you out.

I saw John do all the work and I was still sweating, they turned out nice though!!