Use automatic feeders to make sure your aquariums are receiving the vital nutrients necessary when you are away this summer. Battery-driven automatic feeders deliver food reliably, work right through power failures, and deliver pre-calibrated amounts to avoid overfeeding. Test it at least two weeks in advance of your trip, for three or more days. This will accustom your fish to the feeder, and assure you that it is operating properly.
Incorporate programmable timers to keep your aquarium lights operating on a natural light cycle. Programmable timers can help you and your aquariums get used to a natural cycle that isn't affected by your summer plans. Select a timer that it is rated to meet the demands of your particular light setup and make sure it is on the recommended 10-12 hours per day.