Kamoer X2SR Auto Water Changer
KM-X2SR
The Kamoer X2SR is a WiFi-controlled automatic water change system that uses two large stepper motors to pull old water out and replenish new saltwater with matched, accurate volumes. It...
Or build it into a bundle — save up to 6% ↓What it is, and who it is for.
The Kamoer X2SR is a WiFi-controlled automatic water change system that uses two large stepper motors to pull old water out and replenish new saltwater with matched, accurate volumes. It can run synchronized in-and-out changes or remove water first and refill afterward for a true water change, exchanging more than 900 mL/min. A standard anti-overflow sensor triggers an alarm and stops the pumps if the water level gets too high.
Build around the Kamoer X2SR Auto Water Changer.
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.
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 System
Kamoer X2SR Auto Water Changer
AutoAqua Smart AWC Lite Water ChangerAsked 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.