---
product_id: 345410086
title: "DrTim's Aquatics First Defense for Reef Aquariums – Stress Relief & Immune System Support with Vitamins & Immunostimulants for Fish Tanks - 4 oz."
brand: "drtim's aquatics"
price: "€ 66.44"
currency: EUR
in_stock: true
reviews_count: 5
category: "Dr Tim's Aquatics"
url: https://www.desertcart.com.cy/products/345410086-drtims-aquatics-first-defense-for-reef-aquariums-stress-relief-immune
store_origin: CY
region: Cyprus
---

# 4 oz liquid formula Neutralizes chlorine & heavy metals Boosts fish immune system DrTim's Aquatics First Defense for Reef Aquariums – Stress Relief & Immune System Support with Vitamins & Immunostimulants for Fish Tanks - 4 oz.

**Brand:** drtim's aquatics
**Price:** € 66.44
**Availability:** ✅ In Stock

## Summary

> 🛡️ Defend your reef’s health with every drop — because your aquatic friends deserve the best!

## Quick Answers

- **What is this?** DrTim's Aquatics First Defense for Reef Aquariums – Stress Relief & Immune System Support with Vitamins & Immunostimulants for Fish Tanks - 4 oz. by drtim's aquatics
- **How much does it cost?** € 66.44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/345410086-drtims-aquatics-first-defense-for-reef-aquariums-stress-relief-immune)

## Best For

- drtim's aquatics enthusiasts

## Why This Product

- Trusted drtim's aquatics brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Water Quality Guardian:** Detoxifies heavy metals, neutralizes chlorine & chloramine, buffers pH
- • **Immune System Power Boost:** Vitamins & immunostimulants promote healing & disease resistance
- • **Versatile Use for Every Tank:** Ideal for reef, nano, and sea horse aquariums at every maintenance stage
- • **Stress-Free Aquarium Transitions:** Smooth adaptation for fish & corals during tank setup or changes
- • **All-Natural & Scientifically Backed:** Safe, 100% natural formula trusted by reef pros

## Overview

DrTim's Aquatics First Defense is a 4 oz liquid treatment designed to reduce stress and boost the immune system of fish and corals in reef, nano, and sea horse aquariums. It contains a scientifically formulated blend of vitamins and immunostimulants that promote wound healing and help aquatic life adapt to new environments or water changes. Additionally, it neutralizes harmful chlorine, chloramine, and heavy metals while buffering pH fluctuations, ensuring a safer, healthier tank environment.

## Description

DrTim’s Aquatics Reef, Nano and Sea Horse Aquaria First Defense Fish Stress Relief and Immune Support It’s not easy for fish and coral to adapt to a new environment, but with First Defense Fish Stress Relief and Immune Support, the transition can be smooth. This innovative product from DrTim’s Aquatics works to help fish adapt to new environments by revitalizing the natural slime coat of the Reef, Nano and Sea Horse Aquaria aquarium or fish tank. In addition, First Defense Fish Stress and Immune Support detoxifies heavy metals, promotes healing and repairs wounds. Infuse your Reef, Nano and Sea Horse Aquaria fish tank or aquarium with the all-natural First Defense solution that supports the immune system with immunostimulants and vitamins. This scientifically-designed First Defense helps fish and corals cope with stress that stems from bagging and fishing, environmental changes, water changes and disease treatments. First Defense is available in quantities of 4, 8, 16, 32, 64 and 128 ounces. Find all the pet supplies and aquarium resources you need at DrTim’s Aquatics. With formulas backed by scientific research and innovation, DrTim’s Aquatics’ products ensure that your fish and corals have a clean and safe environment. Features: - For Reef, Nano and Sea Horse Tanks, Aquariums - Supports Immune Systems - Eases Stress, Repairs Wounds, Promotes Healing - Infused with Vitamins, Immunostimulants - 100% Natural Package Includes: 1 x DrTim’s Aquatics Reef, Nano and Sea Horse Aquaria First Defense Fish Stress Relief and Immune Support

Review: I used it in my 3 year established 90 gallon reef tank. I had a bad cyno outbreak after some long overdue tank maintenance. Within 2 weeks of usage the cyno is almost completely gone. My corals are very happy and even though I went full strength during the initial treatment my corals and fish had no negative reactions. Before I added the Eco balance I siphoned out half the sand in my tank and used regular hose water to clean it and remove all the detritus. I usually use RODI and I'm sure most of the cyno came from that rinse. The rest of the sand was stirred up and I siphoned off as much waste as I could find. Afterwards I added the siphoned sand back into the tank. and repeated the process of stirring and syphoning. I also did a 50% water change with RODI water.
Review: I’ve used this every tank start up and it’s worked wonderfully every time

## Features

- First Defense for Reef Aquarium provides stress relief & naturally supports fish immune system
- Aids corals, fish & other aquatic organisms as they adapt to new tank environments & poor water quality conditions
- Contains a mixture of vitamins & immunostimulants that promote wound healing & boost immune health
- Neutralizes chlorine & chloramine in water, buffers against pH changes, & detoxifies heavy metals
- Use when setting-up a new aquarium, changing tank water, adding new fish & after routine maintenance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0119V08GY |
| Best Sellers Rank | #30,774 in Pet Supplies ( See Top 100 in Pet Supplies ) #258 in Fish Medication & Health Supplies |
| Brand Name | DrTim's Aquatics |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,915) |
| Global Trade Identification Number | 00812540014214 |
| Item Form | Liquid |
| Item Weight | 113 g |
| Liquid Volume | 4 Fluid Ounces |
| Manufacturer | DrTim's Aquatics, LLC |
| Manufacturer Part Number | 421 |
| Model Number | 421 |
| Target Species | Fish |
| UPC | 812540014214 |
| Unit Count | 118.29 Milliliters |

## Product Details

- **Brand:** DrTim's Aquatics
- **Item form:** Liquid
- **Item weight:** 0.25 Pounds
- **Liquid volume:** 4 Fluid Ounces
- **Manufacturer:** DrTim's Aquatics, LLC

## Images

![DrTim's Aquatics First Defense for Reef Aquariums – Stress Relief & Immune System Support with Vitamins & Immunostimulants for Fish Tanks - 4 oz. - Image 1](https://m.media-amazon.com/images/I/81h1LYCHzkL.jpg)
![DrTim's Aquatics First Defense for Reef Aquariums – Stress Relief & Immune System Support with Vitamins & Immunostimulants for Fish Tanks - 4 oz. - Image 2](https://m.media-amazon.com/images/I/81JBW8e3Q9L.jpg)
![DrTim's Aquatics First Defense for Reef Aquariums – Stress Relief & Immune System Support with Vitamins & Immunostimulants for Fish Tanks - 4 oz. - Image 3](https://m.media-amazon.com/images/I/71NF18HEF7L.jpg)
![DrTim's Aquatics First Defense for Reef Aquariums – Stress Relief & Immune System Support with Vitamins & Immunostimulants for Fish Tanks - 4 oz. - Image 4](https://m.media-amazon.com/images/I/71WNUpcrwqL.jpg)
![DrTim's Aquatics First Defense for Reef Aquariums – Stress Relief & Immune System Support with Vitamins & Immunostimulants for Fish Tanks - 4 oz. - Image 5](https://m.media-amazon.com/images/I/7176QFNOIML.jpg)

## Available Options

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

## Questions & Answers

**Q: Should i use this product on a new tank with live sand and carib sea life rock?**
A: Yes, this product jumpstarts the system bio-load. With the live sand and the rock your system should be cycled in under a weeks time you'll need a source of ammonia as well.

**Q: The title is for "one & only" but the images show "waste away". which is correct?**
A: You have to select the one and only in the tab below then it will change to the correct one also pick the ounce size you want

**Q: is this a complete kit that comes with an ammonia source?**
A: This is only the bacteria.  Amazon does sell a kit with ammonia and bacteria for 18/19 bucks.

**Q: Is this product the same with One and Only bacteria? I'm buying One and Only so I'm not sure if I still need to get this one.**
A: never have used one and only .. but waste away worked great for me .

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***N on 14 January 2014*

I used it in my 3 year established 90 gallon reef tank. I had a bad cyno outbreak after some long overdue tank maintenance. Within 2 weeks of usage the cyno is almost completely gone. My corals are very happy and even though I went full strength during the initial treatment my corals and fish had no negative reactions. Before I added the Eco balance I siphoned out half the sand in my tank and used regular hose water to clean it and remove all the detritus. I usually use RODI and I'm sure most of the cyno came from that rinse. The rest of the sand was stirred up and I siphoned off as much waste as I could find. Afterwards I added the siphoned sand back into the tank. and repeated the process of stirring and syphoning. I also did a 50% water change with RODI water.

### ⭐⭐⭐⭐⭐ Review
*by N***C on 1 February 2026*

I’ve used this every tank start up and it’s worked wonderfully every time

### ⭐⭐⭐⭐⭐ Review
*by C***E on 26 August 2025*

Did what it was suppose to fo

## Frequently Bought Together

- DrTim's Aquatics Reef One & Only Nitrifying Bacteria – For Reef, Nano and Seahorse Aquaria, New Fish Tanks, Aquariums, Disease Treatment – H20 Pure Fish Tank Cleaner – Removes Toxins – 2 Oz. (400)
- DrTim’s Aquatics Ammonium Chloride Solution for Fishless Cycling: 2 oz., Treats 100 gal. – Fish Tank Cleaner for Saltwater, Freshwater & Reef Aquariums
- API SALTWATER MASTER TEST KIT 550-Test Saltwater Aquarium Water Test Kit

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-04-24*