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Old 02-21-2013, 10:36 PM   #1
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AC70 noisy motor help

Hey so I could use some advice. I bought the AC 70 based on recommendations on here. Hooked it up, brand new filter and in my opinion I find the unit noisy. It's coming from the motor vibration. I tried leveling it and rinsing and restarting it. It vibrates the lid a little bit as well. Is this normal? I feel as if my aqueon 75 was quieter. How much should the motor vibrate on this thing?

Thanks!
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Old 02-21-2013, 10:43 PM   #2
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Hey so I could use some advice. I bought the AC 70 based on recommendations on here. Hooked it up, brand new filter and in my opinion I find the unit noisy. It's coming from the motor vibration. I tried leveling it and rinsing and restarting it. It vibrates the lid a little bit as well. Is this normal? I feel as if my aqueon 75 was quieter. How much should the motor vibrate on this thing?

Thanks!
It happened to me at first.

Step 1. I took the top off, I don't use them at all

Step 2. When it started to make a almost grinding noise I took it apart and cleaned it seated it properly and it's been fine.

It sometimes makes noise and all I do is unplug it for 30 seconds and plug it back in. Noise it gone.

Also on my AC2110's I took that grey rack thing or whatever that is. It's totally useless and gets in my way lol.
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Old 02-21-2013, 10:48 PM   #3
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Hmm good advice. I see alot of ppl say it needs to break in? I might try Vaseline as a lube for the impeller.

This thing can vibrate let me tell ya. I put my hand on the motor and it's really rattling.

I can hear this thing from 5-7 feet away! I really don't want to send it back. Just got it today!
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Old 02-21-2013, 11:32 PM   #4
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Hmm good advice. I see alot of ppl say it needs to break in? I might try Vaseline as a lube for the impeller.

This thing can vibrate let me tell ya. I put my hand on the motor and it's really rattling.

I can hear this thing from 5-7 feet away! I really don't want to send it back. Just got it today!
I know the feeling!! I'll sit in the room and shut everything off and just listen to hear if its making noise. Try those thins first, there really good filters!! I LOVE them, I run perigean,bio max,sponge and chemi pure elite in one and the other is sponge, purigen, chemi pure elite, bio max and poly fill ( to pick up the fine fine debris)

The chemi pure I put in the spot to the left that area there is a good place for it. With those filters the possibilities are endless!! Give it a chance, if it doesn't change call them they will replace it.

Good luck!
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Old 02-22-2013, 02:14 PM   #5
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So, I put Vaseline on the impeller area. It is a little quieter. It's mainly the vibration that's causing the noise. Since the tank is in a main living space I want to avoid tons of mechanical noises. Seems like that's the main complaint of these units. Hoping it breaks in a bit, otherwise ill have to try a new motor. **** shame.

I'm going to look into the options for biomedia. Those all sound good, do they make a big difference? I was mostly a FW guy, so this is all new to me. Thanks for all this info. Really helps.
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Old 02-22-2013, 07:17 PM   #6
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So, I put Vaseline on the impeller area. It is a little quieter. It's mainly the vibration that's causing the noise. Since the tank is in a main living space I want to avoid tons of mechanical noises. Seems like that's the main complaint of these units. Hoping it breaks in a bit, otherwise ill have to try a new motor. **** shame.

I'm going to look into the options for biomedia. Those all sound good, do they make a big difference? I was mostly a FW guy, so this is all new to me. Thanks for all this info. Really helps.
It absolutely helps. Purigen and chemi pure elite for sure. I use it in my FW and SW tanks.
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Old 02-22-2013, 07:24 PM   #7
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If you can fit a part of a mouse pad under the filter to isolate it from the tank, it'll be very quiet. And... the lid being off helps tremendously.
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Old 02-24-2013, 02:35 PM   #8
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Well, no luck. The AC 70 and aqueon 55/75 both to noisy. Thought it was just me but the girlfriends first reaction "wow that's loud". So both HOBs are going back. Guess I'm left with trying a smaller filter like a aqueon or AC 50. I think at this point I may consider a canister. Any recommendations on a quiet canister? Are they truly quieter?

Again this is for a 26 gallon now front, probably only going to keep 2 clowns, 2 coral beauties to start. Appreciate the suggestions.
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Old 02-24-2013, 02:50 PM   #9
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Well, no luck. The AC 70 and aqueon 55/75 both to noisy. Thought it was just me but the girlfriends first reaction "wow that's loud". So both HOBs are going back. Guess I'm left with trying a smaller filter like a aqueon or AC 50. I think at this point I may consider a canister. Any recommendations on a quiet canister? Are they truly quieter?

Again this is for a 26 gallon now front, probably only going to keep 2 clowns, 2 coral beauties to start. Appreciate the suggestions.
I can't believe there that loud. I've had severely and I know literally 30+ with them and nothing. Is get a replacement. Maybe a bad motor. But for the most part these are extremely popular HOB filters. And there quite. Sorry you had issues with it.
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Old 02-24-2013, 04:16 PM   #10
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Yea, if I try putting it on the low setting it vibrates so loud I can hear it on my second floor. Are you supposed to hear a motor hum from 10 feet away?
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