Tiger Salamander Breeding Enclosure

I figure that the ideal situation for breeding mole salamanders is an out door pond properly enclosed. The problem with this is what do you do if you want to breed several species or color variants? You can try to time share the pond or have multiple ponds, but who has space for that, so my goal is to design a breeding enclosure that meets the minimum requirements, An indoor breed setup would be good and I believe I can simulate most conditions, however, I like tackle a problem by starting with a little variables as possible, so the first step is the out door enclosure, Provided that natural weather and lighting conditions meet their needs the only variable I need to be concerned with is size, and of course maturity and fitness of the animals. So here is my first attempt, with scalability in mind I made a wooden enclosure approximately five feet, by two feet, by three feet. it is made out of 2X8 pressurized deck lumber and will be lined with Styrofoam and then fiberglass. 1/3 is set for land. The land and water sections are approximately 16 inches deep. I will take exact measurements when it is completed see pictures below.

Very cool setup! I wish I could do a large outdoor setup for my tigers but the temperature fluctuates too much where I am; its what happens when you live right on the east side of the Continental Divide.
Be careful using the pressurized wood: it is often treated with chemicals like arsenic and copper (would have a greenish tint to the wood, although yours doesn't seem so).

Thanks for the tip it will all be lined with fiberglass so they should have no contact with the wood, but definitely a good thing to know!

How did this work?