Regarding gray tree tadpoles in my fountain....they have yet to sprout legs but seem very healthy. I must have 150 in the first generation, about 4 to 4 1/2 weeks old. I have put in rocks above water and lily pads. I am afraid there will not be enough room for all the froglets. Should I lower the water in the fountain and have lots of "land" available? Also, once their tails start to absorb can they climb out on a branch and start fending for themselves. My whole purpose is to increase their population.