Water Tank Balance Kit

The DLM Wallace Water Tank Balance Kit is a simple, affordable way to link two rainwater tanks with uneven water levels and ensure they stay at the same water level automatically and without the need for an extra pump.

Designed for New Zealand rainwater harvesting systems, this siphon based setup removes the need for underground pipework, tank drilling, or complex plumbing. 

It keeps water moving between tanks by using a siphon that will automatically suck water from one tank into the other as the water level changes.

Key Features

  • Keeps tank water levels equalised using a dependable siphon connection
  • Simple installation with no trenching or bottom-entry plumbing required
  • Designed for NZ conditions and typical Kiwi tank setups
  • Fast priming system using a garden hose for quick activation

Low-maintenance operation with no valves that can fail or introduce air

What’s in the Kit

  • Tank Equaliser
  • 2 × 15mm PVC elbows
  • 1 × 15mm elbow with 19mm black irrigation hose riser
  • 1 × stainless steel hose clamp
  • 1 × snap-on quick connect hose joiner + red bug cap
Variant Item Code Stock
Water Tank Balance Kit
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Zero Stock

The Water Balance kit is ideal for:

  • Linking two rainwater tanks in New Zealand homes

  • Balancing water levels between side-by-side tanks

  • Connecting new tanks to existing rainwater systems

  • Avoiding underground pipework or costly earthworks

  • Improving pump reliability by feeding from one consistent source

Perfect for rainwater harvesting setups, off-grid properties, lifestyle blocks, and household tank systems.

How It Works

  1. The Equaliser is installed inside the supply tank.

  2. A PVC pipe links the supply tank to the receiving tank.

  3. The quick-connect priming line allows air to be purged instantly.

Once primed, the siphon keeps both tanks at the same water level, even if they fill or draw down differently.