---
product_id: 259522976
title: "OTO Solution, 1/2 Oz"
brand: "swimline"
price: "A$37"
currency: AUD
in_stock: true
reviews_count: 2
category: "Swimline"
url: https://www.desertcart.com.au/products/259522976-oto-solution-1-2-oz
store_origin: AU
region: Australia
---

# Compact 2.54x2.54x7.3 cm size Manual, no batteries needed Precise 0.5 oz dosage OTO Solution, 1/2 Oz

**Brand:** swimline
**Price:** A$37
**Availability:** ✅ In Stock

## Summary

> 💧 Swimline OTO: The small splash that makes a big difference!

## Quick Answers

- **What is this?** OTO Solution, 1/2 Oz by swimline
- **How much does it cost?** A$37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/259522976-oto-solution-1-2-oz)

## Best For

- swimline enthusiasts

## Why This Product

- Trusted swimline brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Micro-Dose Mastery:** Exact 1/2 oz volume for controlled water treatment
- • **Space-Savvy Design:** Slim, pocket-friendly dimensions fit anywhere
- • **Versatile Age Range:** Safe for aquatic environments from 13 to 100 years (156-1200 months)
- • **Eco-Friendly Operation:** Manual formula, zero battery waste
- • **Trusted Swimline Quality:** Reliable brand with consistent 4-star user approval

## Overview

Swimline OTO Solution is a compact, 1/2 oz manual aquarium water treatment designed for precise dosing. Manufactured by Swimline, this eco-friendly product requires no batteries and fits seamlessly into any aquatic maintenance routine. Ideal for professional and hobbyist aquarists alike, it supports a wide age range of aquatic environments with trusted quality and consistent performance.

## Description

Swimline OTO Solution, 1/2 Oz.

Review: It's OTO, it works fine
Review: Beware, you only get the OTO, *NOT* the Phenol Red. The listing shows both products and the listing description with the picture states 'red,' implying you would receive a bottle of each, which is how this product is frequently sold. The price is also in line with both bottles. What got was half a test kit for premium cost.

## Features

- Product Type: Toys And Games
- Package Dimensions: 2.4 L x 4.3 W x 7.6 H (centimeters)
- Country of Origin: China
- Package Weight: 0.022 kilograms

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071WSPD3M |
| Age Range | 156 months to 1200 months |
| Batteries Included? | No |
| Brand | Swimline |
| Color | Multi |
| Customer Reviews | 4.0 4.0 out of 5 stars (3) |
| Date First Available | 23 July 2017 |
| Department | Unisex-Adult |
| Description Pile | No batteries required |
| Item model number | 8460 |
| Manufacturer | Swimline |
| Material Type | Other |
| Number of Items | 1 |
| Power Source | Manual |
| Product Dimensions | 2.54 x 2.54 x 7.3 cm; 9.07 g |
| Size | 1/2 OZ. |

## Images

![OTO Solution, 1/2 Oz - Image 1](https://m.media-amazon.com/images/I/51kwz-91sZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by L***R on 27 June 2018*

It's OTO, it works fine

### ⭐ Review
*by T***6 on 18 July 2017*

Beware, you only get the OTO, *NOT* the Phenol Red. The listing shows both products and the listing description with the picture states 'red,' implying you would receive a bottle of each, which is how this product is frequently sold. The price is also in line with both bottles. What got was half a test kit for premium cost.

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**Shop now:** [https://www.desertcart.com.au/products/259522976-oto-solution-1-2-oz](https://www.desertcart.com.au/products/259522976-oto-solution-1-2-oz)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-21*