Differences between these air pumps?

[Discusdude7]

What's the difference between these two air pumps (except the price):
Alita AL-6A:
http://www.kensfish.com/aquarium-sup...-air-pump.html

Alita AL-15A:
http://www.kensfish.com/aquarium-sup...-air-pump.html

Thank you.

[spiffyfish]

Twice the wattage usage and almost double the air output.

[Discusdude7]

Twice the wattage usage and almost double the air output.

So one can power more stones then the other?
How can you tell?

[spiffyfish]

The 6a operates at 13 watts and 11 liters per minute of air and the 15 is 26 watts and 20 lpm. So yes the 15a is a bit more powerful in volume perspective they both put out the same pressure.

[Discusdude7]

The 6a operates at 13 watts and 11 liters per minute of air and the 15 is 26 watts and 20 lpm. So yes the 15a is a bit more powerful in volume perspective they both put out the same pressure.

What does liters per minute mean? Thanks

[spiffyfish]

It is the volume of air output or flow

[Second Hand Pat]

Chris, can the 15a drive more airstones?

[spiffyfish]

I'm assuming so with twice the volume output it should.

[Second Hand Pat]

I would guess it would depend on the resistance in the airstones and the depth of the water.

[spiffyfish]

I'm not sure how many air stones you are trying to power but either one should be able to power quite a few. I had an al40 a few years back which was tremendous overkill for the 5 tanks I had it on, even ken told me it would run some ridiculous number of tanks.

[spiffyfish]

This is true Pat, OP did not mention what it will be running?

[Kal-El]

I have been looking at these two but have not decide on which one to get. I'm carious to see how many stones it can output...

[Discusdude7]

Ok so I wanted I go with a power full air pump (instead of those whispers) to aerate the k1 media in my 40 B sump which is on my 120. I plain on using those long, 8-12 inch airstones

Will also have some of those plastic Airstones Forrest sells in the 120

[Second Hand Pat]

R, how many of these airstone are you planning on running? Perhaps four?

[Discusdude7]

R, how many of these airstone are you planning on running? Perhaps four?

Yes 4 or more if needed. Will also have a few of those plastic Airstones Forrest sells in tank and in sump.