Cor 20 Cor 15 Pump from Neptune

[Bugger]

I was considering buying this pump but I would like to hear from you if you have one and how you like the pump? Please share your expierance and noise concerns with the pump

 

[road_runner]

I was considering buying this pump but I would like to hear from you if you have one and how you like the pump? Please share your expierance and noise concerns with the pump

I believe this pump have problems holding rate under head pressure. Check actual feedback and actual measured flow rate if you have specific minimu rate you want to achive.

 

[nickkohrn]

I have a COR-15 for my Waterbox 100.3. I run it at 75%, which yields roughly 400 GPH, according to my 1" flow sensor. I really like the pump; it's quiet, easily controlled, and I like the integration with my Apex. I purchased a second one, in fact, to use for my mixing container. It can be a backup if something happens to my primary one, or during cleanings. I have had it for nearly a year, and I haven't had any issues with it.

 

[Kyl]

I'd rather buy a varios than either the vectra or cor.

 

[road_runner]

I'd rather buy a varios than either the vectra or cor.

I had bad experiences with vectra. But I think they corrected most of the issues with the v2 vectra.
Cor I would not buy no matter the cost. For vitals like return pump and power heada I prefer stand alone and away from any potential sw bugs or conteoller issues.

 

[Bugger]

I have a COR-15 for my Waterbox 100.3. I run it at 75%, which yields roughly 400 GPH, according to my 1" flow sensor. I really like the pump; it's quiet, easily controlled, and I like the integration with my Apex. I purchased a second one, in fact, to use for my mixing container. It can be a backup if something happens to my primary one, or during cleanings. I have had it for nearly a year, and I haven't had any issues with it.

How quite is quite. I had a vectra that a 100% made noise.

 

[road_runner]

I have a COR-15 for my Waterbox 100.3. I run it at 75%, which yields roughly 400 GPH, according to my 1" flow sensor. I really like the pump; it's quiet, easily controlled, and I like the integration with my Apex. I purchased a second one, in fact, to use for my mixing container. It can be a backup if something happens to my primary one, or during cleanings. I have had it for nearly a year, and I haven't had any issues with it.

What's your aquarium size?
The pump is rated 1500gph... 400gph is low even on 75% I wonder what it is on 100%.

 

[Kyl]

And a reminder, 1% on a DC pump does not mean 1% of RPM, more like 40%. It is in no way linear.

 

[road_runner]

And a reminder, 1% on a DC pump does not mean 1% of RPM, more like 40%. It is in no way linear.

Yup that's why am asking
It's not linear. I doubt it will push more.
Just think about it 1500gph rated giving 400 500gph....1/3 performance.

 

[nickkohrn]

How quite is quite. I had a vectra that a 100% made noise.

I can't run it at 100% because I can't stand the loudness of the water entering my overflow box. At 75%, I don't hear the pump at all. I did have it running at 100% for a while, and I still couldn't hear it.

What's your aquarium size?
The pump is rated 1500gph... 400gph is low even on 75% I wonder what it is on 100%.

Yes, the pump is rated at 1,500 gallons per hour. I just increased it from 75% to 100%, and I'm getting the same measurement through my Apex's flow sensor. I had to put it back down to 75%, though, because the water flowing into the overflow box is loud enough to hear on the next floor up.

 

[SPSReeferMI]

I have a Waterbox 170 and went with the COR-20. It is way too much pump for my tank, I run it at 30%. I've tried to run it at 20-40% and I'm still not sure where I will finally land. I cannot complain at all about the noise, I hear almost nothing and my tank is fairly quiet. I like the Apex integration as well so I can tell if the pump is running while I'm away and adjust the speed from my iPad if I want to experiment. I also have it setup to go to 1% during feed modes to reduce the food from going down the drain as much as possible.

I dropped mine into the sump for better protection from any potential leaks from PVC.

I've had it running for only 1 month.

 

[road_runner]

I can't run it at 100% because I can't stand the loudness of the water entering my overflow box. At 75%, I don't hear the pump at all. I did have it running at 100% for a while, and I still couldn't hear it.


Yes, the pump is rated at 1,500 gallons per hour. I just increased it from 75% to 100%, and I'm getting the same measurement through my Apex's flow sensor. I had to put it back down to 75%, though, because the water flowing into the overflow box is loud enough to hear on the next floor up.

What'd your system volume?
Recomended flow rate on return is 5 to 10 times volume.
This is particularly important if you run powerful skier..you do not want your skimmer intake flow to be lower than your return flow rate otherwise your skimmer efficiency reduce as the skimmer will skimm clean water.

Good luck my freind.

 

[road_runner]

I have a Waterbox 170 and went with the COR-20. It is way too much pump for my tank, I run it at 30%. I've tried to run it at 20-40% and I'm still not sure where I will finally land. I cannot complain at all about the noise, I hear almost nothing and my tank is fairly quiet. I like the Apex integration as well so I can tell if the pump is running while I'm away and adjust the speed from my iPad if I want to experiment. I also have it setup to go to 1% during feed modes to reduce the food from going down the drain as much as possible.

I dropped mine into the sump for better protection from any potential leaks from PVC.

I've had it running for only 1 month.

Ok so am gonna go ahead and bet that you do not have enough flow rate.
Your volume is around 170g. The recomended return flow should be between 850gph to 1700gph.
My recommendation is to increase your flow and adjust your overflow system.
If I have to guess I would say you are at 200 250pgh now which is way too slow and reduce the efficiency of any filtration you have in the sump.
I dealt with this in the past and I was chasing my tail until I measured my vectra flow at that time and discovered I was having slow flow rate. Once I improved it my skimmer was working incredibly better and my nutrients improved alot..
My 2 cents

 

[nickkohrn]

What'd your system volume?
Recomended flow rate on return is 5 to 10 times volume.
This is particularly important if you run powerful skier..you do not want your skimmer intake flow to be lower than your return flow rate otherwise your skimmer efficiency reduce as the skimmer will skimm clean water.

Good luck my freind.

My system volume is nearly 90 gallons after displacement. I’m running a Reef Octopus eSsence 130 skimmer, which produces very dark skimmate.

If I run the pump at 100%, then my filter socks need changed daily or they cause the water to overflow into the skimmer chamber after getting clogged. I don’t mind because the sump can handle that, but there’s no point in running socks then, which I prefer to do.

I’m wondering if my flow sensor is inaccurate. Going from 75% to 100% should increase the measured GPH, even if by only a handful of gallons per hour.

 

[road_runner]

My system volume is nearly 90 gallons after displacement. I’m running a Reef Octopus eSsence 130 skimmer, which produces very dark skimmate.

If I run the pump at 100%, then my filter socks need changed daily or they cause the water to overflow into the skimmer chamber after getting clogged. I don’t mind because the sump can handle that, but there’s no point in running socks then, which I prefer to do.

I’m wondering if my flow sensor is inaccurate. Going from 75% o 100% should increase the measured GPH, even if by only a handful of gallons per hour.

If you need to change daily doesnot that mean you running better filtration and catching debris and nutrients faster?
But yeh, whatever works for you my friend.
People run diffrent tradeoffs

 

[nickkohrn]

If you need to change daily doesnot that mean you running better filtration and catching debris and nutrients faster?
But yeh, whatever works for you my friend.
People run diffrent tradeoffs

It does, and I understand your logic, but if the socks overflow, they aren't going to be catching anything else because it's going to overflow directly into the skimmer chamber, and the skimmer pump won't be able to pull all of that water in before it gets to my return pump.

 

[Kyl]

I say Varios as they're all about the same IMO, all DC pumps with overseas casings and motors. Two of them don't bother to ship with something as trivial as an intake guard, nor allow third party controller support so why not support the one that a) includes a guard and b) is controller agnostic via 0-10v.

 

[Bugger]

I say Varios as they're all about the same IMO, all DC pumps with overseas casings and motors. Two of them don't bother to ship with something as trivial as an intake guard, nor allow third party controller support so why not support the one that a) includes a guard and b) is controller agnostic via 0-10v.

Im thinking of using the 0-10v ports for 4 tunze stream 3 pumps. Another option is the Abyzz which may or may not be a waste of money as I had my vectra break down after 2 years

 

[road_runner]

Im thinking of using the 0-10v ports for 4 tunze stream 3 pumps. Another option is the Abyzz which may or may not be a waste of money as I had my vectra break down after 2 years

Abyzz and red dragon are worth every penny.
There is 20% sale on abyzz going on now just fyi..
These pumps have 10 years warranty..can you imagin..10 years.
Compare this to the 1 year warranty other lower grade pumps have..

 

[User1]

What sort of information are you looking for and are you looking for it from actual owners of the product?

I own a pair of Cor 15's and a Cor 20. I replaced a Jebao DCT 15000 that was originally going to be my primary return pump. It didn't make it past the tanks leak check. It moved water. It was silent. But I noticed a small leak in the neck of the output which made me replace it with something else. Cor's just started to ship so I bought one. Night and day difference in the build quality. Cor 15 is built like a Ford F150. The Jebao DCT 15000 a hostess cupcake holder. Really. The wall of the Cor is thick, heavy, and you know it isn't going to separate. the Jebao is paper thin which explained why it started to come apart. Furthermore, the Jeboa had a handle on it - or what leads you to believe it is something to pick it up with. Nope. Use it to lift and guess what, the handle snaps off the base of the pump. No thank you, trash it went.

Cor 15 primary return pump. 1 1/2 in service or there about. Had it since 2nd week of product general availability.
Cor 15 primary skimmer pump. 1 year in service.
Cor 20 picked up on sale and used as a secondary return pump on furthest 1" Sea Swirl plumbing line. 6 months service.

No problems. Silent. Move water. Easy to swap out. Can do some cool things via Apex like setting a virtual outlet, call it tide, then alternate power between the two pumps. They are great pumps. Then again maybe I'm lucky with mine and biased since I own three. Originally I was going with the Vectra's but at the time they had a known issue and was working to resolve those issues. I know a few people that got caught up in that mess but the support they received was amazing so stayed with the product. I just decided to go with the Cor's and happy.

210 gallon tank. 54 X 30 X 30. Mixed reef. I have my returns lower now than the 80% shown below so have room to grow.