---
product_id: 731532902
title: "PRO - F/2 Algae Food PTB- 1 Gallon"
brand: "fritz aquatics"
price: "$4476"
currency: MXN
in_stock: true
reviews_count: 11
category: "Fritz Aquatics"
url: https://www.desertcart.mx/products/731532902-pro-f-2-algae-food-ptb-1-gallon
store_origin: MX
region: Mexico
---

# Optimized nutrient mix for max algae growth Concentrated 1-gallon formula Proudly made in the USA PRO - F/2 Algae Food PTB- 1 Gallon

**Brand:** fritz aquatics
**Price:** $4476
**Availability:** ✅ In Stock

## Summary

> 🌊 Fuel your reef’s future with the power of PRO-level algae nutrition!

## Quick Answers

- **What is this?** PRO - F/2 Algae Food PTB- 1 Gallon by fritz aquatics
- **How much does it cost?** $4476 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/731532902-pro-f-2-algae-food-ptb-1-gallon)

## Best For

- fritz aquatics enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Pros:** Top-rated by reef hobbyists for consistent, superior phytoplankton growth.
- • **Economical Bulk Size:** One gallon of concentrated algae food supports large-scale or long-term cultivation.
- • **Effortless Culturing:** Pre-mixed solution B lets you skip the lab work and focus on your reef’s health.
- • **Deep Green, High Yield:** Produces vibrant, nutrient-rich algae that supercharge aquatic food chains.
- • **Precision Growth Formula:** Scientifically balanced vitamins & minerals for rapid, dense algae cultures.

## Overview

Fritz PRO - F/2 Algae Food PTB is a concentrated, scientifically formulated part B solution designed to maximize microalgae growth for aquatic ecosystems. Made in the USA, this 1-gallon nutrient mix delivers essential vitamins and minerals based on Guillard’s proven 1975 f/2 formula, enabling fast growth and high cell density. Ideal for reef hobbyists and aquaculturists seeking efficient, reliable algae cultivation to support shrimp, mollusks, and other aquatic life.

## Description

Part B of a two-part growth medium for algae growth. Microalgae is an important food source for aquatic animals. Penaeid shrimp, fresh-water prawns, Artemia sp., Bivalve mollusks, etc., Have been successfully raised utilizing algae. Mass cultivation of microalgae requires a mixture of vitamins and minerals to supply nutrients for maximum growth. Our special formulation in two solutions (solution “a” and solution “b”), keeping separate vitamins from trace elements, allows for storage without the decomposition of vitamins or precipitation of trace elements. This pre-made formula allows the aqua culturist to devote time to culturing organisms, instead of agonizing over analytical balances. F/2 algae food supplies essential vitamins and minerals in a complete, easy to use liquid form in the concentrations according to Guillard’s 1975 f/2 formulation. F/2 algae food, used as directed, allows fast growth rate and high cell densities to be achieved.

Review: The real deal.... - I grow phytoplankton to feed my corals and decided to try this two part, I experimented with other brand F2 and the results are amazing, this yield a very concentrated deep green culture.
Review: Fantastic! - Awesome! I had used this bottle first: https://www.desertcart.com/dp/B0CFK2PHMH?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2&th=1 It was mostly just water, my phyto was a light green water color. As soon as I switched to this the phyto turned a super beautiful dark solid thick emerald green. Awesome product! Fritz rocks.

## Features

- Part b of a two-part growth medium for algae growth
- Great for reef hobbyists growing algae at home
- Concentrated, economical formula
- Country Of Origin: United States

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00OTH5Q90 |
| ASIN  | B00OTH5Q90 |
| Best Sellers Rank | #100,375 in Pet Supplies ( See Top 100 in Pet Supplies ) #956 in Aquarium Fish Food |
| Brand Name | Fritz Aquatics |
| Breed Recommendation | Medium Breeds |
| Customer Reviews | 4.4 4.4 out of 5 stars (82) |
| Date First Available | November 1, 2014 |
| Date First Available  | November 1, 2014 |
| Directions | Dosage / Instructions: Shake Well Before Using. Add one teaspoon (5 ml) Solution A and one teaspoon Solution B per 10 gallons (37.8 L) of fresh or saltwater. Metric dosage: 1 ml per 7.75 liters or 132 ml per cubic meter. If growing diatoms, add 49 mg Na2SiO3 per gallon or 13 mg per liter. NOTES: Final media concentration of vitamins and minerals will be equivalent to final concentrations in Guilla… |
| Included Components | Fritz PRO - F/2 Algae Food PTB- 1 Gallon |
| Item Dimensions LxWxH | 11.89 x 6 x 6 inches |
| Item Package Dimensions L x W x H | 11.89 x 5.91 x 5.91 inches |
| Item Weight | 11.77 pounds |
| Item model number | 84201 |
| Item model number  | 84201 |
| Manufacturer | Fritz Aquatics |
| Manufacturer  | Fritz Aquatics |
| Model Name | Fritz PRO - F/2 Algae Food PTB- 1 Gallon |
| Product Dimensions  | 11.89 x 6 x 6 inches; 11.79 Pounds |
| Size | 1-Gallon |
| Specific Uses for Product | Coat |
| Target Audience Keyword | fish |

## Product Details

- **Brand:** Fritz Aquatics
- **Item Form:** Liquid
- **Liquid Volume:** 128 Fluid Ounces
- **Manufacturer:** Fritz Aquatics
- **UPC:** 080531842010

## Images

![PRO - F/2 Algae Food PTB- 1 Gallon - Image 1](https://m.media-amazon.com/images/I/61iIKxgK-yL.jpg)

## Questions & Answers

**Q: what color is the stuff inside the bottle supposed to be, mine is clear?**
A: Part b should be light pink and part a should be brown.

**Q: This is a stupid question but is the final mixture supposed to be clear? other f/2 media are brown colored. i added 0.5ml part 1+0.5ml part 2+1gal h20**
A: Clear is fine but you may want to shake the bottle lightly before using.

**Q: what is the shlef life of the product?**
A: It's about two years. Your experience will depend on how long the bottle has been on the seller's shelf first.

**Q: is this good to get algea growing in an aqurium? i need algea for snails shirmp etc.?**
A: Yes, it's good for that. Just make sure you buy the other half of the formula too or it's pretty much useless. You might consider growing the algae in a separate tank if you have the time and resources though, I'm not sure how snails would handle the sudden nutrient mix.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The real deal....
*by J***E on September 16, 2019*

I grow phytoplankton to feed my corals and decided to try this two part, I experimented with other brand F2 and the results are amazing, this yield a very concentrated deep green culture.

### ⭐⭐⭐⭐⭐ Fantastic!
*by R***S on April 14, 2025*

Awesome! I had used this bottle first: https://www.amazon.com/dp/B0CFK2PHMH?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2&th=1 It was mostly just water, my phyto was a light green water color. As soon as I switched to this the phyto turned a super beautiful dark solid thick emerald green. Awesome product! Fritz rocks.

### ⭐⭐⭐⭐ Worked for growing the algae, but you have to ...
*by S***N on January 27, 2018*

Worked for growing the algae, but you have to guess how often to use it, as their are no instructions for this on the product label. I called and left a message with the company and am waiting on a reply to this question of how often to use the directed amount.

## Frequently Bought Together

- Fritz Aquatics PRO - F/2 Algae Food PTB- 1 Gallon
- Fritz Aquatics PRO - F/2 Algae Food PTA - 16oz

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-01-26*