Hydor Koralia's Noisy!

gstuman · 02/25/2007, 03:08 PM

I just finished modding my tank to be more quiet and I'm really annoyed with the Koralia 3's I just purchased.

I removed a big sequence pump and went back to the dead quiet Iwaki 20 which is more than enough to push through the sump. I have a Tunze Stream 6000 which is also dead silent. I added the Koralia's for more flow lost from the Sequence Tarpon and they really do create nice gentle flow in the tank but they have a fairly load and annoying hum. They are not touching any glass surfaces other than where they are attached with the base.

I think I'm returning them. Does anyone know if the Tunze nanostreams are as loud? How do the Nanostreams stack up against the Stream 6000s?

Thanks for any direct experiences.

Pete Harcoff · 02/25/2007, 04:17 PM

I have a couple Nanostream 6045's in my tank. They started out pretty loud, but quieted down after about a week. One still emits this faint buzzing noise, while the other one is almost silent.

How long have you run the Koralias for? Maybe they just need some more time to break-in and quiet down, like the Nanostreams?

seagirl · 02/25/2007, 04:35 PM

my hydor #4's are dead silent right out of the box

jpa0741 · 02/25/2007, 04:55 PM

Quote:

Originally posted by seagirl
my hydor #4's are dead silent right out of the box

Same here!

RichConley · 02/25/2007, 04:58 PM

gstuman, send them back and have them replaced.

Lo0seR · 02/25/2007, 05:26 PM

My 4's are silent as well, going on 6 weeks no problem at all.

gstuman · 02/25/2007, 06:04 PM

Wow,

I have two 3s and they definitely are not silent. If you plug them in they pretty much double the sound from the tank which I have been trying to quiet down as much as possible lately.

Thanks for the replies.

gstuman · 02/25/2007, 06:06 PM

They've only been running around 24 hours so I guess I should give them a week to really make sure. Otherwise I'm ordering another Tunze stream 6000 and putting it on a 90 degree oscillator I have.

sherm71tank · 02/25/2007, 06:08 PM

My 4 is silent as well. I have 3 more on order. I hope they are all silent. Maybe they are hit and miss......

raynist · 02/25/2007, 06:50 PM

Quote:

Originally posted by seagirl
my hydor #4's are dead silent right out of the box

I have 7 of the fours and one 3 and they are dead silent as well.

tylerandamanda · 02/26/2007, 02:04 AM

what size tank are you putting the 4s in i wanna get a couple for my 90 gallon? do you think it is enough flow with them. i have a 800 gph return and 300gph spaybar behind my rock.

luke33 · 02/26/2007, 06:59 AM

I have one 4 and you cannnot hear it running, must be defects.

Ray J · 02/26/2007, 08:41 AM

Has anyone hooked them up to a wave maker ??????

Beenalongtime79 · 02/26/2007, 08:45 AM

I too have two 4's and they are silent... however, the more time I spend on RC, the more I believe that some people are just exsquisitely sensitive to noise like humming or light vibrations.

However, since your stream is silent, I don't think you are one of these people. My 4's are just as silent as any Stream.

I would return them and try out another pair. They don't need time to break in like the nanostreams. Just return them and hopefully, you'll get ones that are to your liking.

Cheers,
John H.

Beenalongtime79 · 02/26/2007, 08:47 AM

Quote:

Originally posted by Ray J
Has anyone hooked them up to a wave maker ??????

I don't have it on a fast switching wavemaker. I have one of mine coming on and off once every hour. So 1 hr on and 1 hr off.

I know a couple of people have had good success with the Seio multicontroller. (They have like 2-3 hydor 4's on one of the Seio multicontroller outlets.)

Cheers,
John H.

gstuman · 02/26/2007, 10:16 AM

I don't think I'm too sensitive. I used to have a roar coming from my tank which is in my office / den and I couldn't even hear my wife down the hall or even talk on the phone. Now I have reduced it to mostly just a hum but the Hydor's account for about 1/2 of the noise with a loud metalic buzz. My Tunze Stream 6000 is very quiet unless you put your ear on the glass right next to it.

I guess I'll return them.

02/25/2007, 03:08 PM	#1
gstuman Premium Member Join Date: Mar 2005 Location: Austin, TX Posts: 190	Hydor Koralia's Noisy! I just finished modding my tank to be more quiet and I'm really annoyed with the Koralia 3's I just purchased. I removed a big sequence pump and went back to the dead quiet Iwaki 20 which is more than enough to push through the sump. I have a Tunze Stream 6000 which is also dead silent. I added the Koralia's for more flow lost from the Sequence Tarpon and they really do create nice gentle flow in the tank but they have a fairly load and annoying hum. They are not touching any glass surfaces other than where they are attached with the base. I think I'm returning them. Does anyone know if the Tunze nanostreams are as loud? How do the Nanostreams stack up against the Stream 6000s? Thanks for any direct experiences. __________________ Regards, Greg Current Tank Info: 60 gal Nuvo and random parts right now.

02/25/2007, 04:58 PM	#5
RichConley Registered Member Join Date: Sep 2004 Location: Bostonian in Chicago going to DC Posts: 9,908	gstuman, send them back and have them replaced. __________________ NO TANKS!!!

02/25/2007, 06:04 PM	#7
gstuman Premium Member Join Date: Mar 2005 Location: Austin, TX Posts: 190	Wow, I have two 3s and they definitely are not silent. If you plug them in they pretty much double the sound from the tank which I have been trying to quiet down as much as possible lately. Thanks for the replies. __________________ Regards, Greg Current Tank Info: 60 gal Nuvo and random parts right now.

02/25/2007, 06:06 PM	#8
gstuman Premium Member Join Date: Mar 2005 Location: Austin, TX Posts: 190	They've only been running around 24 hours so I guess I should give them a week to really make sure. Otherwise I'm ordering another Tunze stream 6000 and putting it on a 90 degree oscillator I have. __________________ Regards, Greg Current Tank Info: 60 gal Nuvo and random parts right now.

02/26/2007, 08:41 AM	#13
Ray J Registered Member Join Date: Mar 2004 Location: Philadelphia Posts: 32	Has anyone hooked them up to a wave maker ?????? __________________ My wife says I dont listen to her......."or somthing like that" Current Tank Info: 110 Gal.

02/25/2007, 04:17 PM	#2
Pete Harcoff Registered Member Join Date: Feb 2006 Location: Canada Posts: 196	I have a couple Nanostream 6045's in my tank. They started out pretty loud, but quieted down after about a week. One still emits this faint buzzing noise, while the other one is almost silent. How long have you run the Koralias for? Maybe they just need some more time to break-in and quiet down, like the Nanostreams?

02/25/2007, 04:35 PM	#3
seagirl Registered Member Join Date: Feb 2007 Posts: 1,130	my hydor #4's are dead silent right out of the box

02/25/2007, 05:26 PM	#6
Lo0seR Premium Member Join Date: Dec 2004 Location: La Mesa, Ca. Posts: 443	My 4's are silent as well, going on 6 weeks no problem at all.

02/25/2007, 06:08 PM	#9
sherm71tank Premium Member Join Date: Nov 2003 Posts: 3,670	My 4 is silent as well. I have 3 more on order. I hope they are all silent. Maybe they are hit and miss......

02/26/2007, 02:04 AM	#11
tylerandamanda Registered Member Join Date: Feb 2007 Location: Seattle Posts: 27	what size tank are you putting the 4s in i wanna get a couple for my 90 gallon? do you think it is enough flow with them. i have a 800 gph return and 300gph spaybar behind my rock.

02/26/2007, 06:59 AM	#12
luke33 Moved On Join Date: Dec 2006 Location: Indiana Posts: 8,375	I have one 4 and you cannnot hear it running, must be defects.

02/26/2007, 08:45 AM	#14
Beenalongtime79 Registered Member Join Date: Jul 2001 Posts: 4,437	I too have two 4's and they are silent... however, the more time I spend on RC, the more I believe that some people are just exsquisitely sensitive to noise like humming or light vibrations. However, since your stream is silent, I don't think you are one of these people. My 4's are just as silent as any Stream. I would return them and try out another pair. They don't need time to break in like the nanostreams. Just return them and hopefully, you'll get ones that are to your liking. Cheers, John H.

02/26/2007, 10:16 AM	#16
gstuman Premium Member Join Date: Mar 2005 Location: Austin, TX Posts: 190	I don't think I'm too sensitive. I used to have a roar coming from my tank which is in my office / den and I couldn't even hear my wife down the hall or even talk on the phone. Now I have reduced it to mostly just a hum but the Hydor's account for about 1/2 of the noise with a loud metalic buzz. My Tunze Stream 6000 is very quiet unless you put your ear on the glass right next to it. I guess I'll return them. __________________ Regards, Greg Current Tank Info: 60 gal Nuvo and random parts right now.