A while ago I found a puddle in a construction zone that had thousands of tadpoles, took a bunch to *save* since I knew the puddle was going to be plowed over. I thought after a bit of research this seemed like an easy venture - apparently not! Once my tads have been reaching the point where their tail is almost absorbed, they die. This has happened for about 10-12 in a row so clearly I'm doing something wrong. I have 11 left, and I'm hoping I can get the remaining survivors to make a little more progress before I release them back to the outdoors!
I put them in a 10 gal tank, which has a floating shelf for turtles in it. The tads loved to go to the edge of it and practice their breathing. Once they started losing their tail I realized they didn't have the leg strength to kick to the surface anymore so I have lowered the water level and built up a rock path to the floating shelf. I've lowered it further so that about a quarter of the tank is land (either from the shelf or rocks), and the rest is water (which only gets to about 3-4" deep). I leave a light on all day and turn it off at night - it doesn't appear to be too hot in there but I've read they are susceptible to overheating so I only have the light on periodically during the day. I change some of the water every 5-7 days, have been feeding boiled spinach to the tads (which they love). I asked the local petstore what food works best for the little froglets and they suggested bloodworms. I'm not even sure if that's the best option, but if it's suitable, should I put the bloodworns in the water or on the land? (Currently, I'm doing both). I'm am hoping that since last night I made it even easier for them to get out of the water that this will have resolved things but I'm not sure. Since then, some of the froglets have stayed out of the water the whole time now, which they hadn't done before.
I've felt guilty everytime one of the little guys doesn't make it since it seems like they might have just been simply drowning? Any thoughts on what I could do differently or better?
Thanks in advance...