Hi Marinemom,
I can understand why you would stay away from the bloodworms... seems more than a few have allergies to them, and they can be deadly for those with serious allergies.
You might try raising the temp to 85 or 86 degrees... increased temp will usually help. It will just take some time for them to adjust to foods they aren't accustomed to getting. Another option may be CBW (California Blackworms). The only source I would recommend for those is Dan at Aquatic Foods. He has a banner at the bottom of this page.
Judi