Neptune

Neptune ATK V2 Auto Top-Off System

NEPTUNE_ATK_APEX_INTEGRATED

$190.00In stock

The Neptune Systems ATK (Apex Tank Kit, shown here as the current ATK V2) is a complete automatic top-off system that runs standalone or integrates with an Apex controller for...

1
Or build it into a bundle — save up to 6% ↓
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OVERVIEW 01

What it is, and who it is for.

Neptune ATK V2 Auto Top-Off System

The Neptune Systems ATK (Apex Tank Kit, shown here as the current ATK V2) is a complete automatic top-off system that runs standalone or integrates with an Apex controller for added features and monitoring. It uses dual optical sensors with no moving parts, IQ-Fill water run-time intelligence, and a mechanical float valve for three layers of overfill protection. The kit includes a 24V DC PMUP v2 pump rated at 100 gph plus tubing and a magnetic mounting bracket.

Specifications
Pump Model Neptune Systems 24V DC PMUP v2
Flow Rate 100 GPH
Power Consumption 17 watts
Max Head Height 10 - 15 feet
Tubing Length 13 feet
Power Cord Length 6 feet
Water Level Detection Dual optical sensors + float valve
Safety Features Overflow timer, run-dry protection, anti-siphon valve
Control Type Standalone (plug & play); WiFi with optional Apex
Mounting Magnetic
BUILD AROUND IT · LIVE

Build around the Neptune ATK V2 Auto Top-Off System.

It's already in your system below. Add the flow, filtration and dosing around it and the discount starts working — tiers climb as the build grows, and the reef meter fills with it.

COMPARE 06

Pick the right one, not the biggest one

The honest line-up from ato & ro/di. Most buyers reading this page should buy the middle column.

BRS 5-Stage 75 GPD RO/DI SystemBRS 5-Stage 75 GPD RO/DI System$190BULK_REEF_SUPPLY_5_STAGE_75_150_ View product
Our pickNeptune ATK V2 Auto Top-Off SystemNeptune ATK V2 Auto Top-Off System$190This page Add to cart
Kamoer X2SR Auto Water ChangerKamoer X2SR Auto Water Changer$199KM-X2SR View product
Price
$190
$190
$199
SKU
BULK_REEF_SUPPLY_5_STAGE_75_150_
NEPTUNE_ATK_APEX_INTEGRATED
KM-X2SR
Buy it for
This entry represents the Bulk Reef Supply 5 Stage Premium...
The Neptune Systems ATK (Apex Tank Kit, shown here as...
The Kamoer X2SR is a WiFi-controlled automatic water change system...
QUESTIONS 07

Asked before checkout

The questions our support inbox actually gets.

Does it ship quickly?+

Orders placed before 2 PM ET on a business day leave the same day. Tracking is emailed the moment the label prints.

What if it's the wrong fit for my tank?+

Return it. 30 days, no restocking fee, refund to the original payment method. Better: tell us your tank first and we'll spec the system for free — half of all returns are sizing problems.

Who handles the warranty?+

We do. Everything carries the manufacturer's warranty and we run the claim for you — one email to us instead of a ticket queue.

How does the bundle discount work?+

Add items in the bundle builder: 2+ items saves 5%, 3+ saves 8%, 4+ saves 12%, and 5+ saves 15% off the whole system, applied at checkout.