Dr Joe;973017; said:Depends on the equipment... Like Fry said a powerhead with a venturi puts alot of air into the tank along with water movement. A large micro-bubbler can do pretty much the same thing, you just can't direct the flow. A powerhead by itself (no aeration) is not as effective at degasification.
Either way, you need to break the surface tension to do the most good.
Dr Joe
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T1KARMANN;973045; said:i can never understand why people even bother with power heads
you may aswell use a inturnal filter atleast its doing something except just blow air
freeskierrocket;973047; said:you got it backwards.......powerheads move water (critical to a closed system) and **air** pumps move air hence making bubbles!!!!
T1KARMANN;973111; said:an internal filter moves water the same way as a power head you just add a defuser the same as a power head