Auto-Refill Kit 15L

The Mars Hydro 15L Auto-Refill Kit is a gravity-fed, electricity-free refill system that maintains stable water levels for humidifiers and hydroponic reservoirs. A precision float valve automatically regulates liquid height to prevent dry-outs and overflows. The kit includes a 15 L collapsible bucket, 5 m PE tubing, L and T connectors, bucket and tank bulkheads, a float valve, on/off valve, and a pipe cutter for quick, tool-free installation. For best performance, position the reservoir more than 8 inches above the device being supplied. It is compatible with Mars Hydro 6 L humidifier models that have a removable top cap and can also support hydro setups that benefit from steady top-ups via gravity feed and leak‑resistant seals.