1pc Rainwater Diversion and Overflow Pipe Solution Self-Priming Siphon Pipe Kit Easy Automatic Drainage and Filling Fish Tank Swimming Pool Gravity Flow - No Energy Consumption

No Energy Consumption: Works by gravity & self‑priming siphon principle, no electricity, no batteries, zero energy cost, safe and eco‑friendly.

Automatic Drainage & Filling: Achieves stable self‑priming siphon flow for easy water changing, draining, and filling in fish tanks, swimming pools, and water containers.

Wide Application: Perfect for fish tanks, swimming pools, rainwater collection systems, water tanks, aquariums, and household water circulation.

Efficient Rainwater Diversion: Effectively diverts rainwater and controls overflow, prevents water accumulation, and keeps your system clean and smooth.