Cap wrote:
Since you are thinking of using real water in it, I would make sure it is drained every night, because unless you are going to have it filtered, standing water is a disaster area with mosquitoes, and other nasty bacteria.
Cap makes an excellent point - if you're going to keep it indoors, I might try to find some alternative to real water unless you want to do the upkeep on it.
I've made a few large-scale dios/playsets, since I
had a bunch of room in my basement -- and I do have an idea for a water set-up, but I'm just gonna do it as a landscaping project in the backyard. Basically a Koi pond, but without the Koi. I'm debating real or fake plant life in the pond itself -- but it'll be filtered, preferably with some manner of cascading waterfall and I'll plant some small evergreen shrubs around it (to look like giant-ass trees.) So not only can I use it for water/swamp battles in the Spring/Summer, but come Winter, it becomes a frozen lake and my Joes/Halo figs can enact Arctic campaigns on it.
But for your idea, since you're water-proofing the sunken parts, maybe a drain plug hooked up to a hose would work well - that way you & the kids could play all day, then just empty it out at night - no muss, no fuss. Plus, you could use food coloring to change it up each time - green for the swamp, etc. Sounds like a fun project - can't wait to see some WIP shots.
Matthew – 
