---
product_id: 304008377
title: "AquaDoc Spa Calcium Hardness Increaser Hot Tub Owners Rely on, Calcium Increaser Spa Hardness Increaser & Calcium Booster for Hot Tubs"
brand: "mav aquadoc"
price: "S/.158"
currency: PEN
in_stock: true
url: https://www.desertcart.pe/products/304008377-aquadoc-spa-calcium-hardness-increaser-hot-tub-owners-rely-on
store_origin: PE
region: Peru
---

# Raises calcium by 10ppm per oz Easy 4-step application Prevents corrosion & staining AquaDoc Spa Calcium Hardness Increaser Hot Tub Owners Rely on, Calcium Increaser Spa Hardness Increaser & Calcium Booster for Hot Tubs

**Brand:** mav aquadoc
**Price:** S/.158
**Availability:** ✅ In Stock

## Summary

> 💦 Keep your spa flawless—because soft water is so last season!

## Quick Answers

- **What is this?** AquaDoc Spa Calcium Hardness Increaser Hot Tub Owners Rely on, Calcium Increaser Spa Hardness Increaser & Calcium Booster for Hot Tubs by mav aquadoc
- **How much does it cost?** S/.158 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/304008377-aquadoc-spa-calcium-hardness-increaser-hot-tub-owners-rely-on)

## Best For

- mav aquadoc enthusiasts

## Why This Product

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

## Key Features

- • **Made in the USA:** Quality you can trust, crafted domestically for consistent performance.
- • **Effortless Maintenance:** Simple 4-step process keeps your spa water crystal clear and perfectly balanced.
- • **Precision Calcium Boost:** Increase hardness in precise 10ppm increments for perfectly balanced water.
- • **Ultimate Spa Protection:** Defend your hot tub from corrosion, etching, and unsightly stains with professional-grade formula.
- • **Trusted by Hot Tub Owners:** A must-have chemical for every spa enthusiast to maintain optimal water quality.

## Overview

AquaDoc Spa Calcium Hardness Increaser is a professional-grade formula designed to raise calcium levels in hot tubs by 10ppm per ounce, preventing corrosion, etching, and staining. Easy to use with a simple 4-step process, it ensures perfectly balanced water and protects your investment. Made in the USA, it’s the essential spa chemical for maintaining crystal-clear, healthy water.

## Description

AquaDoc Spa Calcium Hardness Increaser Hot Tub Owners Rely on, Calcium Increaser Spa Hardness Increaser & Calcium Booster for Hot Tubs

## Features

- Make balancing your water easier & more cost effective with AquaDoc's calcium hardness increaser. Our spa calcium hardness increaser is vital to ensuring proper water hardness levels in your hot tub. AquaDoc's Calcium Booster gets your hardness up.
- Avoid corrosion, etching, and staining - AquaDoc's Professional Grade Hot Tub Calcium increaser is your best defense against soft water in your hot tub or spa. Guard calcium levels from decreasing too low with our spa Calcium booster for hot tubs.
- How it works - AquaDoc's Hot Tub Calcium hardness Increaser works to raise your water's hardness level to ensure properly balanced hot tub water. Our spa hardness increaser easily works to raise your Calcium levels by 10ppm increments or more.
- The Hardness Increaser Hot Tub Owners Love - When it comes to Spa Chemicals calcium hardness increaser is a must have. Without hot tub chemicals calcium hardness can become unbalanced. Always have a hot tub calcium booster ready and waiting.
- Easy to Use, Made in the USA - (1) Check your calcium levels, (2) 1 ounce of AquaDoc's Calcium increaser will boost water's hardness level by 10ppm. (3) After determining hardness level goal, add proper amount of increaser while equipment is on. (4) Run filter for 1 - 2 hours, wait 20 minutes, then retest water.

## Product Details

- **Brand:** MAV AquaDoc
- **Item Weight:** 14 Ounces
- **Item Form:** Granular
- **Product Benefits:** Corrosion
- **UPC:** 850026022131

## Images

![AquaDoc Spa Calcium Hardness Increaser Hot Tub Owners Rely on, Calcium Increaser Spa Hardness Increaser & Calcium Booster for Hot Tubs - Image 1](https://m.media-amazon.com/images/I/71JSnaWpnUL.jpg)

## Frequently Bought Together

- MAV AquaDoc Calcium Hardness Increaser Hot Tub Owners Rely On, Calcium Booster for Hot Tubs & Spas
- AquaDoc Total Alkalinity Increaser for Hot Tub - Alkalinity Booster for Spas & Fresh Water pH Balance
- Non-Chlorine Spa Shock for Hot tub - Chlorine Free Tub Treatment & Enhanced to Assist Bromine Suitable Oxidizer Oxidizing by AquaDoc

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-03-20*