quiet air pump brand?

Price doesn't matter I need a quiet air pump to use for 4 20gallon totes. I know waterfalls are more efficient but the totes aren't connected

I'm using this one for brewing teas, nice and quiet. Not sure if it's strong enough for your needs.

aquacave.com alita linear models

I found almost all the air pumps I've tried are pretty loud, if you have the outlets you could do multiple tetra whispers they have larger units; honestly I just got the largest air pump I could get and i bought sound proofing off of amazon and rigged myself a sound proof closet for it to sit in.

My ET80 was extremely quiet. Over the fans and pumps, I often had to get close to it/put my hand on it to make sure it was working lol.
My homie ran an Alita 120 and it was fairly quiet also. Not quiet like the ET was though.

I don't use pumps on a regular basis anymore. But I hung or placed tetra pumps on a tight cell sponge pad. Larger pumps I placed on a neat thing called "Moon Gel". Available at your local instrument store. Used as a vibration dampner on cymbals.. Excellent electonics isolation as well. Bred freshwater fish in a 14'x14' room full of ten gallon tanks. Air pumps will drive you mad. Doubled scotch bright pad on exhaust helps as well.

Hang the pump from a ratcheting light hanger and it will not make noise. I have one of the big ass 110 L/Min air pumps hanging and it's nearly silent that way. Set it on something and it's loud as fuck.

Renfro said:

Hang the pump from a ratcheting light hanger and it will not make noise. I have one of the big ass 110 L/Min air pumps hanging and it's nearly silent that way. Set it on something and it's loud as fuck.

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Loud as fuck if they even think of getting close to something lol. I order 3 of those styles but smaller, 2 were twice as loud as the original I had. I’m thinking you have to order 5 and keep the quiet one

My tetra whispers are quiet enough that I have to touch them to know if they are running. I believe mine is for 20 gallons so larger ones might be different.