Measure twice, dose once

Friday, 01 July, 2016 | Supplied by: BioGuard

Istock 000009007439xlarge

We recently assisted one of our retailers in solving a dosing problem by examining the very fundamental issue of correct pool volume calculation.

The rectangular 48,000 L pool was measured incorrectly, with each error compounding the problem, leading to a large volume miscalculation as highlighted below.

Correct volume: 48,000 L.

Rounding: Rounded up to 50,000 L “because it is easier just to say my pool is 50,000 litres”. This is the volume the customer might tell you their pool is. When asked to properly measure their pool, the customer returns with these values.

Depth: Incorrect by 10 cm at each end. Pool volume reduced to 44,800 L.

Length: Incorrect by 1 m. (Easy to do over a 10 m span if measured by stepping it out.) Pool volume reduced to 39,200 L.

Width: Incorrect by 20 cm. Pool volume reduced to 37,200 L.

Steps: Overlooked; approximately 200 L unaccounted for.

In the end, the volume was miscalculated as 37,000 L — that’s a massive 23% difference! Consider now that every dose of chemical, or every treatment, was 23% too little.

Simple measurement inaccuracies can dramatically change litreage, resulting in incorrect chemical application. To avoid subsequent problems, always ensure pool and/or spa volume is strictly accurate before entering data into BioGuard Water or similar dosage calculating program.

Image credit: ©

Phone: 1300 313 414
Related Products

Maytronics Drive automated dosing

Maytronics has introduced the pH Drive automated dosing option for its Ozone Swim system,...

Clark Rubber pool and spa franchise

Clark Rubber is adding pool and spa shops and service vans to its franchising model.

Daisy slimline below-ground pool cover box

Daisy Pool Covers' slimline below-ground pool cover boxes are designed to extend cover...

  • All content Copyright © 2020 Westwick-Farrow Pty Ltd