2HR Aquarist APT Fix
APT Fix by 2HR Aquarist is a targeted algae treatment for planted aquariums! And from our experience, it’s one of the most effective (but gentle) solutions when you’re dealing with an algae bloom that’s grown beyond manual removal or natural control methods.
Its fast-acting formula works directly on affected areas and biodegrades completely after treatment. APT Fix is especially effective against dreaded Black Beard Algae (BBA), BGA, Staghorn, and filmanentous types like green hair, fuzz, and string algae.
Each bottle includes a spot-dosing pipette for precise and easy application to affected areas. When used as directed, APT Fix is safe for most freshwater fish and shrimp.
APT Fix in action in our UNS 45U Iwagumi planted aquarium, showing targeted treatment of problem algae:

APT Fix Highlights
- Copper-free! Safe for fish and shrimp when used as directed
- Fast-acting treatment for common aquarium algae
- Gently biodegrades and will not disrupt aquarium cycle
Size: 300ml / 10.14FL Oz.
Dosing Instructions: Spot dose affected areas. Use up to 1ml per 2.5 Gallons
TIP! Start with half the recommended dosage for 3–7 days before increasing if needed. When spot dosing plants, temporarily turn off filtration to stop flow. For hardscape treatment, partially drain the aquarium to expose affected areas before applying. After treatment, perform a water change to help maintain balance.
Ingredients: 3% Epoxy Aldehydes
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Shipping, Returns and Refunds
Shipping
Orders are typically processed within 1-2 business days M-F. However, additional time may be required during peak seasons and federal holidays. For orders containing live plants, we exercise extra caution and assess factors such as travel distance and weather to ensure safe transit.
To avoid delays, please ensure all order information is accurate and complete. We cannot offer refunds and are not responsible for orders shipped to incorrect addresses due to errors in provided information. Once an order has been shipped, delivery times are determined by the carrier and are outside of our control. On average, shipments arrive within 2–5 business days, excluding weekends and holidays. For more information, please visit our FAQ page.
Returns
If you are not satisfied with your purchase, please contact us within 48 hours of delivery. Approved returns must be shipped back within 14 days of approval. Returned items must be unused, unopened, and in their original packaging. Specific return requirements, if applicable, will be listed on the product’s page. For more information, please visit our FAQ page.
Refunds
No worries, we’ll take care of everything as long as it fits the guidelines above.Most answers to general questions can be found on our FAQ page.