It happens sometimes and it isn't a safety issue, just an appearance one. They will be fine as is.

Dave

They are safe. Normally that happens when you hold the ladle up too high over the jar and air bubbles form and get trapped in the jelly.

When I use Splenda, it seems to create a lot of foam. Thats because the particles are 'puffed up' and so they cause tiny bubbles to float on the surface. I usually stir the jam a bit more, or use the small granular Splenda packed in tiny teaspoon packets. That packet type is not cup for cup equivilent to sugar, but it doesn't cause the foaming. I usually tear open about 10 packets at a time and pour it into a glass jar. I buy the 600 packet boxes of Splenda at BJ's and usually empty all the packets into a single 16 ounce jar.

Thank you guys so much for your response