lizard guano and organic terrarium run off as a fertilizer???

I have a 55 gallon anole colony that has a complete organic substrate, with plants, living insects and worms. The system is set up so that I can give the substrate a good flushing and all the liquid collects in the water feature where I siphon it off and usually dump it out.

I was wondering would this water make a good fertilizer?
What can I do to "test" it, to see if it is a good fertilizer?
Would this be worth testing on a plant?

You could certainly test the pH of the run off. I would try on 1 plant to see how it reacted. My gut reaction is that it would have some benefit. Personally I would pour it in my compost pile with all of the other manures and and vegetative waste. I would expect it to add some nitrogen to the mix.
Good luck I'm interested to see your out come.