Streamside, your Bermuda needs 4 to 7 fertilizer applications every growing season. Depends on how long your growing season is. Northern latitudes maybe only 4, southern latitudes up to 7. Atlanta my guess is 5 or 6.

You start in spring just after the grass is about 50% green. Then repeat every 30 to 45 days up till about 30-days before your first frost date.

Now for the details. Either the very first or last fertilizer application, not both, you use a complete fertilizer with a 4-1-2 or 3-12 ratio like 20-5-10 or 15-5-10. Then all the rest are straight nitrogen. I highly suggest you use a slow release urea product for all applications.

As to your water question, there is almost no such thing as too much water. You water as needed at a rate of 1-inch per application as a general rule of thumb unless you have run-off problems.