cor 20

New in Box - opened only for pictures and to add 3D printed strainer to the box. Use With or Without an Apex Controller! The intelligent Neptune COR-20 Return Pump is easily the smartest pump available. Directly connect to any Apex controller through an Aquabus Port, but if you do not have a...

Neptune COR 20 pump, just received yesterday directly from Neptune. Opened box for pix. Can include 3D printed strainer.

Cor 20 $210 shipped Tunze 5017 $120 shipped Rsk 300 skimmer $260 shippped

Is it normal for inner pump to be dirty where the impeller goes? What’s the point of there being a o ring ?

Recently both my COR pumps failed so I have these. Maybe someone needs them/one? $1.00 each or both for $1.50 ; ) Or pick up in NJ 07702 Buyer pays shipping

I’m selling a cor 20 return pump. Perfect working condition, $180 shipped to the lower 48 https://www.bulkreefsupply.com/cor-20-intelligent-return-pump-neptune-systems.html?dfw_tracker=43788-211357&ab_version=B

Well maintained COR 20, with new fittings and o-rings. Pulled off a closed loop system that I shut down. Includes a 3D printed power brick holder as well. Asking $275 shipped CONUS.

Neptunes Apex cor 20 Only selling because add a uv which the pump can’t keep up and I do not want to have two pumps The pump will be cleaned and taking off line next Wednesday as the other ones in transit $325

Hello everyone. I currently have an 8-watt UV sterilizer hard plumbed from my sump to my DT, acting as a secondary pump to the DT, along with a direct line from a Cor pump. After reading more, I understand it's better to have a closed loop from the DT directly back to the DT. How important is...

Please feel free to ask any questions Thanks for looking

Pump does not come with power cord or driver but pump does work. I have confirmed pump works 100%. Price includes shipping. Text me for faster response. 512-696-1804

Some really nice cor 20s came by the shop and I grabbed em. I’ve got multiples, used less than 6 months. You may need to replace the upper union. All units have control boxes, bus cable and power supplies. Asking 275 each, will ship.

Used Apex COR 20 w/ new power supply, new pvc fittings, and seals. Asking $280.00 Will ship if buyer pays for shipping.

I am figuring out which direction to go for my 440 gallon build. I currently have a single Vectra L1 as a return pump on my 180 gallon display. I will be using that in another manner for this new set up, so that one is out of the question. So now I am debating on which dual pumps to go with...

Looking for a Cor 20. Could trade Vectra M2 if interested. PM with your price. Thanks in advance.

Hello, I'm running the Neptune cor 20 by itself, and it's flashing red and not turning on. I have no idea why. it looks like it's the second dot that is flashing, so I tried another outlet on a different power strip, and nothing is changing. I have no idea what the deal is, and everything else...

Starting yesterday, one of my 2 cor20 return pumps shuts down with an “overcur” error displayed in fusion. (This pump has been running <6 months.) The pump will turn on a few minutes and then back off throughout the day. 5th indicator LED blinking which means impeller blocked. I opened pump...

Has anyone successfully set up a COR20 with a battery back up? I've seen people talking about the icecap battery backup V2 with it's 24v output and transfer switch as a viable option to bad it's not around anymore. but id imagine this could easily be done with two 12v batteries hooked up in...

I have a bit of Apex Neptune Gear left from the tank breakdown 2 weeks ago. Here is what I have left SOLD-2x COR20 controllable return pump-$280 each SOLD-1x Neptune DOS dosing heads-$250 each -1xNeptune WAV’s-$130. Hardly saw any use, got these from a friend when he moved SOLD-1x Neptune Apex...

Hello all! Hopefully the title is catchy, unlike this build thread... I promise this won't start out all that rad :) So where do I start? I usually approach things with the end in mind as that's a recipe for success in my job, but this is for fun so we'll pitch that book in the trash to...

Hey everyone I originally posted this in another thread but decided to expand on it a little and put it here… I have been watching reefing videos on YouTube for around 10 years and have always wanted to get into the hobby. Around 4 years ago I purchased a used 270 Lt CADE HL800 tank (800w x...

Click on image to zoom Neptune Systems COR-20 INTELLIGENT RETURN PUMP (2000 GPH) 68% Recommend this to a friend (19 of 28) 28 Reviews Starting at $29/mo with Affirm. Prequalify now $324.95 SKU: 211357 IN STOCK: 172 Add to Cart Add to Wishlist Ships Free tomorrow Guaranteed Risk...

-(2) MP10 Wireless Quiet Drive with Extra Wet Side (EACH ONE COMES WITH EXTRA WET SIDE) $190 Shipped -Neptune Apex Classic with (2) Aquabus Cables 1 is brand new, USED ORP and PH Probe still wet, Temp Probe, Display AND EXTRA BRAND NEW ORP AND PH PROBES IN BOX and PH solutions included $350...

Cor 20- won’t restart after turning off for maintenance through fusion , it shows a Voltage icon and tries to spool up slowly then shuts off over and over . The cor will only come back after I shut the apex down and restart..... Any suggestions would be greatly appreciated.

I give in. I keep searching and searching, reading through threads, watching videos, trying to figure it ALL out on my own. But now it is time to just let go and give it up to a “higher power” - the R2R Forum. Trying to find the magic, elusive flow in the tank - enough, but not too much...