Hi Gentle, welcome to the forum.
I would recommend that you not feed mealworms as a staple but perhaps an occasional snack.
You want to feed a variety of foods; earthworms, crickets, axolotl pellets, salmon pellets, frozen bloodworms, frozen brineshrimp, fresh fish fillets, and there are other ideas in this forum and the site listed below.
Axolotls differ in how much they eat and owners differ in how often and how much they feed. My axolotls are offered food every 2 to 3 days. How much they eat varies by what I am feeding them (they each have their favorite item). When fed earthworms they consume an average of 3 worms that are about 3" long.
If you haven't found it already you may want to check out caudatas sister site
http://www.axolotl.org/ it is full of must read info for new axolotl owners.
From:
http://www.axolotl.org/health.htm
Some physical problems are related to nutrition. Caudates (a term used to describe newts and salamanders) tend to have difficulty dealing with large quantities of fats and oils in their diet. White worms and tubifex are the most commonly quoted high fat foods. Dog food can also contain a high proportion of oils and fats. When fed exclusively on these foods, occurrences of sclerosis of the liver increase. Other foods, such as mealworms, are quite low in calcium, which can lead to a number of problems. They also have a lot of chitin (a structural protein in insects and some crustaceans) which axolotls can't digest, and this passes through their guts intact. Again, these shouldn't be fed as the sole food but rather as an occasional treat to avoid health problems. Mealworms present an additional danger: they have poweful jaws that can damage an axolotl internally. If you must feed mealworms, it is advisable to crush the jaws of the mealworms prior to feeding. This can be accomplished using a strong forceps or tweezers.
From:
http://www.axolotl.org/feeding.htm
I've fed mealworms to my axolotls, but the chitin (the protein that makes up the hard exoskeleton in insects) is undigestible to the axolotls. Even though I didn't feed many, the filter in-take actually started to clog with little pieces of chitin and I was still picking bits of chitin out of the filter media months afterwards. Apart from this little inconvenience, they're not a complete food, so I would only recommend them as a treat.
Also if you do not know about tank cycling or did not cycle your tank you may be interested in this article
http://www.caudata.org/cc/articles/cyclingEDK.shtml
(Message edited by cynorita on October 29, 2005)