Hi Todd,
Thanks for the advice, I'll put some thought into it. You make a great point regarding the thermoregulation. Obviously I want to do what's best for the snake. But I am freezing the lizards before I feed them, which should hopefully kill any parasites. If you have any evidence that freezing does not kill parasites, please let me know. Then I will have to rethink my strategy!
As far as the crapfests go, I can tell you that his poops
have been much less frequent and less runny (ie, more what I would consider "normal" when compared to other snakes) with the lizard/fish diet than with a mouse diet. So I guess my contention with what you (and most others) are saying is the idea that a high fat diet "works", regardless of resulting digestive/bowel activity. Chronic, daily projectile diarrhea indicates a problem in most animals. Given that, I did analyze the nutritive content of prey items and noticed that an all rodent diet will be very high in fat as compared to even a 50/50 lizard/rodent diet. My conclusion was that their digestive systems are not designed to handle all-rodent (especially farm raised rodents) diet, but a lower-fat, higher protein diet.
So please don't feel any responsibility for my actions, I had already decided how to feed my snake before I even read your posts. 
Thanks again for your posts, I really appreciate them. And I will keep you posted. I'm glad someone is interested, actually, because while I realize I'm going against the grain and taking a risk, there is a small chance my "experiment" might actually be of benefit.
Thanks,
Ed
>>Ed, I wouldn't feed him lizards or frogs, as he may key on these. Rodents make up a large part of the diet, and carry no parasites that I am aware of. Lizards and frogs, on the other hand do. Your snake will never be a wild indigo hopefully and does not have the ability to get to the required heating and cooling necessary to combat these parasites. Some posts way back I believe I stated that some of these observed animals were heavily parisitized. You would not want your beloved pet and costly investment to get sick. It just is not in the realm of abilities for 99% of us to provide the full range of options for them to thermoregulate. Unless you had an outdoor enclosure with a rock lined pit dug down at least 4 feet, I would stick to rodents, chicks, maybe quail, and occasional fish, that were farm raised, the fish you could probably feed from a fish market, fresh water species. We just don't know all there is to know yet, but we do know about frogs and lizards carrying parasites. I am glad that my observations are interesting, but they are only that right now, observations, and I would feel horrible if any of my advice led to the death of even one snake. For what it's worth, indigos are well known for their crapfests, whatever the diet. Please rethink this. If you do continue this, keep us informed of the health of the snake. be on the lookout for blisterng type pustules, bad sheds, and in general an ugly looking snake, also check his mouth periodically for flukes.
>> Remember, your snake is not a wild snake, I would only use lizards and frogs to stimulate appetite or on a wild caught snake
>>, if it is feeding on rodents, I would continue that routine and suppliment with birds and fish. I know some people that feed their animals road killed snakes, but until you are expert enough to be able to suffer the loss of a few snakes, you should go with what works.
>> On the other hand, we as a community can learn from all keepers trial and error or success. These are just my opinions and worth .02, lol!
>> Better kick up the heat on one side for a few hours a day if you intend to continue, and have regular vet visits.
>>-----
>>Todd Hughes