I'm new to the citrus thing also and was also panicked by dropping fruits (smaller than golf-ball) and wondered if my tree was sick. Basically it just comes down to, if everything else is right with the tree (container sizer, soil condition, nutrients, watering, sunlight), that the trees will only support the fruit that it's able to support and the rest will fall away from the tree. Hard to see, I know, trust me. But it's a matter of patience and letting Mother Nature play her part and letting your tree do what comes naturally. There's no rushing that perfect fruit.

Thanks for the info,herboholic, I was afraid that may be the case. However, if it has all it can support, shouldn't it just quit blooming as well?

Not necessarily. Blooms come as a natural process of the plants evolution and growth and is a good thing! The fruitlets it produces and whether they're to stay on the tree, in subject to the tree itself. Really nothing to be done about it. It's hard, I know. I literally mourned when three of my fruits dropped off my Eureka. I thought there was something terribly wrong. I have since been reassured, given my climate, growing conditions and care, that the tree is just doing what comes naturally. I wish I could force the tree to hold on to those fruits, but it basically comes down to what the tree will hold on to and produce mature, ripe fruit and those that it will let go of.

Do what I do. Get your digital camera and take pictures of those beautiful blossoms to remember them by. It's also a great way to keep a "snapshot" diary of your trees growth. You can look back on photos and see it's progress, or in worse cases, see where it started to go downhill and be more informed as to how to diagnose it.

>> shouldn't it just quit blooming as well?
You have to remember that the flowers are not just for your tree's benefit.
Those flowers are also there to provide pollen to other trees.
So even if your tree was not able to bear much fruit, it was able to help other citrus trees bear their fruit.

Butter, even though it's hot and dry there, are you allowing soil to dry a bit between waterings? You don't want soil muddy..Soil should dry before adding more water..
Also, it sounds like you're adding too many chemicals for a new plant..Are u following fertilizer and other checmical, instructions?
When you think about it, most plants that come from a nursery are given a dose of food, many times, timed-release fertilizers..So, you don't want to overdo it..
A well-balanced fertilizer should do fine..adding an iron suppliment is something I feel is needed 2-3 times a yr, whether or not citrus has chlorosis..I use it as a preventative and never have chlorosis problems..
Yes, it's normal for a certain amount of fruit to drop, but it's upsetting..Especailly when we see pics of trees packed w/fruit..(S)
As long as your citrus is getting adequate sun, and sufficient water, it should be fine..Toni