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View Full Version : Have a quiet tank? Prove it!!


rishma
10/02/2017, 09:53 PM
This is just for fun! But we may all learn a thing or two.

Here is what you do:


Download dB Meter for your smart phone
Turn off another ambient noise in your house.
Turn on the app and hold your phone where the tank in the stand meet
Record your dB and post here


Take your reading with all noise making equipment running normally. Include a list of all your noise making equipment in the post.

I have tried very hard to get my tank quiet. It's become a hobby within the hobby. So often I See people claim a certain piece of equipment is "silent" and then other people complain it makes too much noise.

All of our perceptions of silence/noisiness are individual opinions. I thought adding an arbitrary but standard measurement to the discussion might be fun.
I'll go first:
Redsea reefer 170
Noise making equipment: Sicce syncra PRO, tunze 9001DC, Eheim 1048, tunze 6095, Hydra 26HD.
https://imgur.com/a/lzBQi

rishma
10/02/2017, 09:57 PM
https://imgur.com/a/lzBQi

41'db

rishma
10/02/2017, 10:05 PM
https://i.imgur.com/wFePNMT.png

d0ughb0y
10/02/2017, 11:24 PM
Can you measure with the stand door open, and another with everything off?

lagatbezan
10/03/2017, 12:49 AM
46 db.
Noise making equipment reeflo dart pump and reefoctopus skimer pump. If I leave only my return pump on you would think nothing is on.

Gweeds
10/03/2017, 02:26 AM
Took 3 readings... lowest db is as suggested by OP, next is above the tank and loudest is inside the cabinet...

Noise making eqpt: jebao cp55 gyre, jebao dc6000, red devil d4000, eheim compact 2000, TMC pump (2200lph), another 2000lph pump for the skimmer, eheim 800 (I think) air pump, Mars aqua light over the fuge. Sounds loud to me lol.https://uploads.tapatalk-cdn.com/20171003/2f08dec3880856912962db9b01d54597.jpghttps://uploads.tapatalk-cdn.com/20171003/23a13632f578037e2991eacc664d8e51.jpghttps://uploads.tapatalk-cdn.com/20171003/c936d699771dad0331ed813063f51505.jpg

Sent from my SM-G930F using Tapatalk

n2585722
10/03/2017, 10:51 AM
How are you posting the screenshots. No photobucket.

WLachnit
10/03/2017, 11:08 AM
I do not feel like my 300g tank is quiet. I have 4 MP40WQD, ecotech L1, Current USA DC return, Reef Octopus DC skimmer. I think the loudest component is my overflow.

https://uploads.tapatalk-cdn.com/20171003/61a9c0f886f69e4aa11c36a7124cda58.jpg

WLachnit
10/03/2017, 11:15 AM
My 93g is a very different story. It's very quiet. Then again I only have a Current USA DC return and a Skimz skimmer.

With the cabinet stand closed.
https://uploads.tapatalk-cdn.com/20171003/6f575d1e15e35ed30969690e4e8b66ae.jpg

And with it open.
https://uploads.tapatalk-cdn.com/20171003/f1f9ed466fc2846fbc81e541a452dcc0.jpg

Pslreefer
10/03/2017, 11:51 AM
Mine running 2 Jebao 15ís, 4 mars aqua led, mag 9.5 pump, eshopps psk 300 skimmer in a stock tank sump on a 180.

https://uploads.tapatalk-cdn.com/20171003/f60299c405dfc8e4011ab780cce99711.jpg



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iced98lx
10/03/2017, 12:15 PM
This is in front of the tank, where the tank meets the stand:

https://farm5.staticflickr.com/4483/37429352706_559673c5b9_c.jpg

Seems a little unfair since the equipment is not accessible from the front (it's an in-wall tank) so here is in the back:

https://farm5.staticflickr.com/4511/37429357126_8738306389_c.jpg

Equipment:
2x MP40QD
1x DC12000 return
1x DC6000 for skimmer
1x Rio1100 for ATS

3x 165w "Black Boxes" with upgraded fans

ca1ore
10/03/2017, 12:36 PM
I own a dedicated SPL meter. Using that I get 45 db at night. Most noise-making equipment is in the basement though. Just Vectra, Vortech, oveflow and Radions at the tank.

MrsReefK
10/03/2017, 12:54 PM
Wow, I downloaded the app to try later when I get home on the tank. My office is relatively quiet, actually really quiet. Even with my door shut, and no ambient noise, I'm getting 41... scared to see what the tank readings are now! Lol. Looks like I'm likely not a "quiet tank" contender.


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rishma
10/03/2017, 12:56 PM
Super impressed (actually stunned) with the sub-40db measurements. I am going to have to try again and make sure other house noises are not contributing, but sub -40 is really quiet. 30 db near a tank seems unbelievable.

ca1ore
10/03/2017, 02:40 PM
Before I bought the Gen4 Radions, my tank was 38db at night. Essentially silent. Those %&*#$% fans.

Gweeds
10/03/2017, 02:45 PM
How are you posting the screenshots. No photobucket.Do mine via tapatalk... dead easy, upload directly from phone.

Sent from my SM-G930F using Tapatalk

iced98lx
10/03/2017, 02:51 PM
Super impressed (actually stunned) with the sub-40db measurements. I am going to have to try again and make sure other house noises are not contributing, but sub -40 is really quiet. 30 db near a tank seems unbelievable.

Keep in mind my 30db is in front of a tank where all the equipment is behind a wall. There is a lot of insulation everywhere but where the tank itself is between the two rooms. Both under the tank and above are insulated, etc.

The 35db in the fish room surprised me, though the fans on the lights are the only thing I had judged as 'audible'. The DC12000 is running at about 1/2 power and my skimmer is a LifeReef so the air intake goes into the cup, which is a nice silencer.

The forced air heat/air is certainly louder than the tank when on, as is the dehumidifier in the fish room. I can tell very quickly when a filter sock is in need of change as the noise of the water overflowing the filter sock is immediately noticeable.

One thing that brought down noise the most was replacing the fans in the CBB light fixtures with Noctua PF Series fans.

I am also skeptical of the 30db result, and will test again with the wife's phone (different make/model) when she gets home.

bif24701
10/03/2017, 03:16 PM
Before I bought the Gen4 Radions, my tank was 38db at night. Essentially silent. Those %&*#$% fans.



Kessil AP700 fan is silent.


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n2585722
10/03/2017, 05:03 PM
Something is not right. I have 2 MP10's 1 SiÁce Syncra 3.0, 2 SiÁce Syncra 1.0's, SWC 120 skimmer, 9 cooling fans going. The first was at the stand and tank. The second is with stand doors open. The third is inside the stand.https://uploads.tapatalk-cdn.com/20171003/03027ef5cf120259c20f1d4ab9d972be.jpghttps://uploads.tapatalk-cdn.com/20171003/7b63d86c656b780b1530b1782bbceb2f.jpghttps://uploads.tapatalk-cdn.com/20171003/fb103c047b108da8ead9198ba2b95597.jpg

Sent from my XT1056 using Tapatalk

d0ughb0y
10/03/2017, 05:23 PM
I think all should use the same app to get a good/valid comparison.

mcgyvr
10/03/2017, 06:17 PM
26.2 dB average over 2 minutes
24.8 dB average after I closed the window (damn crickets)

80G rimless
External DIY bean overflow
Jebao DCP6500 return pump
2 x Jebao PP-8 powerheads
BM Curve 5 skimmer
ATI T5 6 x 24W

rishma
10/03/2017, 09:04 PM
While I am enjoying everybody's responses, I have lost confidence in this experiment.

I closed myself in the car in my garage with the door closed. I held my breath. There was no audible sound. My dB Meter read 34 dB.

There must be an issue with how we are measuring the sound. There is no way my phone would read 30 dB or less in anyone's house on any tank.

I'm not saying anybody's doing anything wrong here. I just think there some other variables that I didn't consider. I thought a smart phone and a decibel app would give consistent results, but based on what I'm seeing here if there is no way that's happening.

n2585722
10/03/2017, 09:11 PM
While I am enjoying everybody's responses, I have lost confidence in this experiment.

I closed myself in the car in my garage with the door closed. I held my breath. There was no audible sound. My dB Meter read 34 dB.

There must be an issue with how we are measuring the sound. There is no way my phone would read 30 dB or less in anyone's house on any tank.

I'm not saying anybody's doing anything wrong here. I just think there some other variables that I didn't consider. I thought a smart phone and a decibel app would give consistent results, but based on what I'm seeing here if there is no way that's happening.



We all have different phones with different microphones. No two will have the same readings. I didn't think there would be the wide range of differences.

mfinn
10/03/2017, 09:13 PM
Someone asked me how much noise there was with Vectras so I took this picture last spring.
The only thing that is on in the sump area is the Vectra L1 and M1, and the drain noise coming into the sump.

After I took the picture I went into the quietest room in the house and sat with the dba meter running and it was measuring 28dba. I figured it was ambient noise during the day around the house.


http://imagizer.imageshack.us/v2/1024x768q90/921/8LuwyQ.jpg (https://imageshack.com/i/pl8LuwyQj)

d0ughb0y
10/03/2017, 09:51 PM
While I am enjoying everybody's responses, I have lost confidence in this experiment.

I closed myself in the car in my garage with the door closed. I held my breath. There was no audible sound. My dB Meter read 34 dB.

There must be an issue with how we are measuring the sound. There is no way my phone would read 30 dB or less in anyone's house on any tank.

I'm not saying anybody's doing anything wrong here. I just think there some other variables that I didn't consider. I thought a smart phone and a decibel app would give consistent results, but based on what I'm seeing here if there is no way that's happening.

if you exclude those without pictures and those using a different app, then you can get a more normalized/standardized data for comparison.

Pslreefer
10/03/2017, 10:38 PM
While I am enjoying everybody's responses, I have lost confidence in this experiment.

I closed myself in the car in my garage with the door closed. I held my breath. There was no audible sound. My dB Meter read 34 dB.

There must be an issue with how we are measuring the sound. There is no way my phone would read 30 dB or less in anyone's house on any tank.

I'm not saying anybody's doing anything wrong here. I just think there some other variables that I didn't consider. I thought a smart phone and a decibel app would give consistent results, but based on what I'm seeing here if there is no way that's happening.



I noticed in the red and black app it says average and peak, so that may explain the higher dB?


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WLachnit
10/03/2017, 11:34 PM
if you exclude those without pictures and those using a different app, then you can get a more normalized/standardized data for comparison.

Even then, I wonder how much variability there will be unless everyone uses the same model of iphone, etc?

ca1ore
10/04/2017, 07:49 AM
Kessil AP700 fan is silent.

Well I don't have the AP700. Though I do have a bunch of 360s and while quiet, the fans are not silent.

ca1ore
10/04/2017, 07:50 AM
Hard to imagine that a smart phone app is going to be all that accurate (or precise). As I noted above, I used a dedicated SPL meter (that I have because of my other $$$ sucking hobby - high end audio).

d0ughb0y
10/04/2017, 09:19 AM
Even then, I wonder how much variability there will be unless everyone uses the same model of iphone, etc?

it will be reduced to that.
since there is no way to calibrate to a common reference, perhaps there should be a reading from a quiet place, or with all the tank equipment off.

I must say, last night at midnight, when everything was really quiet, my app still reads 35 (phone is iPhone 7plus). So I doubt I will ever get a reading below that at home.

mcgyvr
10/04/2017, 10:58 AM
Yeah you could add a "locked in the quiet closet" baseline then take your measurement and that would make it a "better" exericise I guess..

I had roughly the same reading on the other side of my house in a bedroom as I did in front of my tank..
My house is really..really quiet and my tank is too.. I have no "city noise",etc... All I literally hear is crickets if I have the windows wide open..