• Chelsea

Jacqueline6670

Much depends on the pump model. I have a Deltec HLP-4040 for return. You can't really tell if it's on or off. It has a power of 4 tons and can lift up to 3.5 meters. But it's certainly not budget-friendly. However, they are machining the snail to the rotor from the Dunfoss heating pump. It turns out to be much cheaper and has the same noise level. In your case (freshwater), you might not need to machine anything. The snail there is made of cast iron. It's not suitable for the sea at all.

Natasha

The OR3500 is completely silent.

Stuart

I generally respect such sex for a press. If it's not a secret, who lives there with you?

Karen1649

To be honest, I really want a sea aquarium, but I can't afford it right now, so for now, it's freshwater (maybe the sea will be in the next, different aquarium). I don't want to build a canister filter based on a sewage pipe for the freshwater tank; it's too much hassle to take apart and put together later, so this way is much more convenient. The main inhabitants will be haracinids, and for catfish, I'll have sturisomas. I apologize again for not being entirely on topic with the post, but hardly anyone has this in freshwater setups, and they practically don't encounter this problem.

Dawn6148

no noise or hum? Of the ones I have, NewJet1700 (bought as the main pump) and Atman PH-2220 (bought as a backup, it hums less but has lower performance than stated) also don't make noise, they just hum like a "transformer substation." I agree, I can't handle Deltec HLP-4040, Dunfoss - apparently there was a mistake, Grundfos pumps - are those the ones used in heating systems?

Sarah

Yes, I was mistaken. Of course, Grundfos. Here is the link. I have such a pump as a backup in case the Deltak fails. I will say it again. It can definitely be used for fresh water without modifications. And its price is just over $100.

Brandy1134

The device, without modifications, is still inconvenient to use, as the input and output are arranged in a peculiar way, and the price is slightly off; without modifications, it costs about 150 euros, but it works without issues in freshwater.

Earl

Thank you for the help and the link, tomorrow I will go check out the Grundfos. The price is approximately the same for both Grundfos and Aqua Medic OR PH2000-2500, OR 2500. With Aqua Medic, of course, it's easier; you buy it, install it, and it works. But I have a feeling that the Grundfos will be MUCH quieter; at least, you can't hear it in the boiler... I just don't know, maybe I'll have to think about ordering a new housing... although it seems like it can be done without it.

Mario

How do you prefer it? It's silent. OR 2500 - a little rattle. The RH 2500 is supposed to be quiet, but I haven't had it, just heard rumors.

Curtis

Yes, it's not very convenient to connect. But it's ready-made. You don't have to look for someone to turn the snail. And about the price - they have always been more expensive for you. The UPA 15-90 model costs 763 (97$). Other models are not much more expensive.

Christine

Thank you very much for the tips, I'm still considering what to take. Now at least I understand which direction to look in; when I bought the NewJet, no one mentioned that it would be SO noisy... In our city, there is something like UP Basic, the seller said it's a 4, but it seems it was written UPS 25-40, I will clarify, the price is somewhat strange, maybe they got it wrong. I saw the price of 405, but they mentioned a place where it should be even cheaper, I just don't know how to deal with counterfeits. The person who deals with heating said that they are already being assembled here (in Bila Tserkva), and there won't be any others... I also looked online at the model, UPS 25-40, it suits me better in terms of performance.

Sharon

Here it is, take a look. However, it cost a damn 900 with a little extra, the sellers guarantee it's original, with a passport and a two-year warranty.

Leonard

Thank you, I am looking forward to it. I have currently done sound insulation of the cabinet with 10mm foam foil; I didn't achieve a strong effect, the hum didn't go away, but the noise from the water has disappeared.

Thomas5021

Sound insulation does not help against low-frequency rumble, but vibration isolation may help.

John3142

I placed the pump on foam in the sump, the pump is connected to the supply tube through a hose, and I insulated the hose and the supply points where they touch the sump with foam. Do you suggest putting the sump on vibration-damping feet? The cabinet is wrapped in polyfoam on all sides, including the sides, back wall, doors, bottom (inside the cabinet, the top of the countertop on which the sump stands is wrapped, meaning the sump is on a "mat") and the top (the bottom of the countertop on which the aquarium stands is wrapped). P.S. I think all issues will be resolved with the new pump.

Michele9664

How long has the pump that is humming been running?

Sheila

Damn, you've already written a bunch of posts about the noise. And now it turns out that your Atman is 1.5 years old. Well, they are certainly durable, but there is a limit to everything. Get a refurbished Grundfos and forget about the problem.

Michelle

Yes, 1.5 years, but what's most interesting is that it buzzes less than the new Nudge, which is practically new; maybe the Nudge is defective... That's what I did.

James

Where can I order this modified pump???

Holly

I replied in a private message. By the way, Grundfos requires outdoor installation. Right now, I'm considering whether I could install, say, the same NewJet through a silicone hose and on vibration-damping inserts outside the aquarium, which would significantly reduce the noise... but I think the option with Grundfos is still better. Moreover, I already have the pump; I just can't get around to installing it.

Charles894

Good day to everyone! I am reporting on the work done: the installation of the pump based on Grundfoss has significantly reduced the noise; now the pump is hardly audible, although some noise is still present, but it has shifted from low-frequency to high-frequency, which is almost completely muffled by the soundproofing of the cabinet... Here is a photo of the installed pump; the valves will be installed a little later. At this stage, I am trying to adjust the Durso drain... but that's another story. A HUGE thank you to everyone! P.S. I have "migrated" to the Durso setup.