---
product_id: 114369981
title: "Kolar Labs Crystal Cal Activated Carbon – Small Jar, Activated Charcoal for Aquariums and Fish Tanks"
brand: "kolar labs"
price: "$30.15"
currency: USD
in_stock: true
reviews_count: 8
category: "Kolar Labs"
url: https://www.desertcart.us/products/114369981-kolar-labs-crystal-cal-activated-carbon-small-jar-activated-charcoal
store_origin: US
region: United States of America
---

# Fast-acting clarity overnight Universal filter compatibility Lab-grade granular carbon Kolar Labs Crystal Cal Activated Carbon – Small Jar, Activated Charcoal for Aquariums and Fish Tanks

**Brand:** kolar labs
**Price:** $30.15
**Availability:** ✅ In Stock

## Summary

> 💧 Transform your aquarium overnight with Kolar Labs’ crystal-clear power!

## Quick Answers

- **What is this?** Kolar Labs Crystal Cal Activated Carbon – Small Jar, Activated Charcoal for Aquariums and Fish Tanks by kolar labs
- **How much does it cost?** $30.15 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/114369981-kolar-labs-crystal-cal-activated-carbon-small-jar-activated-charcoal)

## Best For

- kolar labs enthusiasts

## Why This Product

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

## Key Features

- • **Simple, Precise Usage:** Use 1 cup per 50 gallons with easy rinse & bi-weekly replacement for peak results.
- • **Fits Every Filter Type:** Large granules flow seamlessly in reactors, canisters, intank & hanging filters.
- • **Optimized Pore Structure:** Specifically engineered granules maximize filtration efficiency and flow.
- • **Crystal Clear Water, Fast:** Eliminates cloudiness, odors & discoloration overnight for a pristine tank.
- • **Premium Lab-Grade Quality:** Manufactured to FCC standards ensuring top-tier activated carbon performance.

## Overview

Kolar Labs Crystal Cal Activated Carbon is a 0.35 lb jar of laboratory-grade granular activated charcoal designed specifically for aquarium use. It rapidly removes cloudiness, odors, and discoloration overnight, meeting Food Chemicals Codex (FCC) standards. Its large granules ensure optimal flow in all filter types, making it a versatile and trusted choice for maintaining pristine aquatic environments.

## Description

desertcart.com : Kolar Labs Crystal Cal Activated Carbon – Small Jar, Activated Charcoal for Aquariums and Fish Tanks : Pet Supplies

Review: Did the job and great bulk value - Bombed my tank for worms. The value on this jar was great. 3 lbs. The worm treatment wanted me to use 1 lb per 50 gallons. Soni sued 2 lbs and have another lb or so for emergency. Make sure to give it a good rinse. As you would for any activated carbon.
Review: Great value - Great value--lasted a couple of years for our 20-gallon tank. Did the job! With a name like Kolar--it's gotta be excellent! (My former surname). :}

## Features

- CONTAINS 0.35 lbs (160 g) - FAST RESULTS: Works quickly to eliminate cloudy water, colors and odors overnight – guaranteed
- TRUSTED SOURCE: Made according to Food Chemicals Codex (FCC) standards; Bringing you the highest quality, bulk and packaged Activated Carbon
- HIGH PERFORMANCE: Laboratory grade granular activated carbon; Specifically made with optimum pore structure for aquarium use
- WORKS IN ALL FILTERS: Large granules allow great flow in any filter media bag, cartridge or filter for efficient filtration; Use in reactors, canister filters, intank filters or hanging filters
- EASY TO USE: Use 1 cup per 50 gallons (1 tablespoon for every 3 gallons); Change every 2-4 weeks; Short rinse before use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07KPNZHRF |
| Best Sellers Rank | #23,150 in Pet Supplies ( See Top 100 in Pet Supplies ) #228 in Aquarium Filter Accessories |
| Brand | Kolar Labs |
| Brand Name | Kolar Labs |
| Customer Reviews | 4.5 out of 5 stars 1,409 Reviews |
| Item Form | Granules, Liquid |
| Item Weight | 0.35 Pounds |
| Liquid Volume | 50 Gallons |
| Manufacturer | Kolar Labs |
| Manufacturer Part Number | CC 160g |
| Model Number | CC 160g |
| Target Species | Fish |
| UPC | 851794007382 |
| Unit Count | 160.00 Grams |

## Product Details

- **Brand:** Kolar Labs
- **Item Form:** Granules, Liquid
- **Item Weight:** 0.35 Pounds
- **Liquid Volume:** 50 Gallons
- **Manufacturer:** Kolar Labs

## Images

![Kolar Labs Crystal Cal Activated Carbon – Small Jar, Activated Charcoal for Aquariums and Fish Tanks - Image 1](https://m.media-amazon.com/images/I/71w1TFMIx5L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Is this the same type of charcoal used in the bags to remove odors around the home and in vehicles?**
A: Yes, this is a true liquid phase carbon made specifically for water purification, but it will work well for air handling as well, to remove odors around the home, litter box etc.  One thing you will notice is that it is very clean, low dust, which you will really like when handling it.  Thanks!

**Q: can this be used in cat litter boxes?**
A: This product will be perfectly safe and effective for use in cat litter boxes.  Thanks!

**Q: What is the carbon made of?  Coal, hardwood, or coconut husk?**
A: This is called a sub-bituminous Granular Activated Carbon.  It is a very clean, coal based carbon, that is derived from a special source, not in China, with an excellent pore structure for aquarium use.

**Q: Can I use this product for water filter system for my house?**
A: Sure, that is how I use it.  Just be sure to rinse out the fine particles before you install.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Did the job and great bulk value
*by D***K on January 4, 2026*

Bombed my tank for worms. The value on this jar was great. 3 lbs. The worm treatment wanted me to use 1 lb per 50 gallons. Soni sued 2 lbs and have another lb or so for emergency. Make sure to give it a good rinse. As you would for any activated carbon.

### ⭐⭐⭐⭐⭐ Great value
*by 2***T on November 25, 2025*

Great value--lasted a couple of years for our 20-gallon tank. Did the job! With a name like Kolar--it's gotta be excellent! (My former surname). :}

### ⭐⭐⭐⭐⭐ Good customer service
*by W***K on February 8, 2026*

Good quality and delivery on time

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/114369981-kolar-labs-crystal-cal-activated-carbon-small-jar-activated-charcoal](https://www.desertcart.us/products/114369981-kolar-labs-crystal-cal-activated-carbon-small-jar-activated-charcoal)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-09*