When Don’t You Need Aquarium Power heads ?
Aquarium powerheads are some of the most important parts in a reef or large freshwater tank that needs constant water circulation for heat distribution. A powerhead, however, is not a necessity for all tanks.
You may need to think twice about getting a powerhead if your tank already has an internal filter that has sufficient flow. You can determine if there is sufficient flow if you place a thermometer at the end of the tank away from the heater and seeing if the temperature is the same on both sides. Experts also say that you will not need a powerhead if your water is under two feet or if your external filter provides a strong enough outflow for a substantial current.
In the end it will be up to you if you want to purchase aquarium powerheads or not. If you are planning on upgrading your tank to something bigger, buying a powerhead may still be a good idea.
