Description
Aqua-Pics Carbo-Max Double Strength 1l — Liquid carbon supplement sized for a larger planted system
A larger planted aquarium, or more than one smaller one, goes through liquid carbon fast enough that a 250 mL bottle becomes a weekly errand rather than a stocked supplement. Aqua-Pics Carbo-Max Double Strength 1l (SKU: 725063) is the one-litre size of Aqua-Pics’ glutaraldehyde-based liquid carbon, sold as double the concentration of its standard Carbo-Max, supplying plants with readily available organic carbon for photosynthesis while working against nuisance algae, including black beard algae. It can replace pressurised CO2 entirely or run alongside it, and the 1 L bottle is built for a bigger display or for dosing several planted tanks from the one supply.
Directions open with a 30 to 40 percent water change, then 5 mL per 50 L as the initial dose, followed by 1 mL per 40 L daily for 1 to 2 weeks while the tank takes up regular dosing. Being glutaraldehyde-based, it should be measured to the stated rate rather than increased, and the safety data sheet is worth checking before working with it undiluted. At the initial rate, a 1 L bottle covers about 10,000 L in one treatment, and at the 1 mL daily maintenance dose it holds roughly 1,000 days of dosing for a 40 L aquarium, spread across one large system or several smaller tanks dosed in parallel.
Usage & Application
When to Use
- Larger planted displays: A bigger bottle for systems that use more carbon per dose.
- Several tanks at once: One supply dosed across multiple planted aquariums.
- No pressurised CO2: A standalone carbon source across a larger set-up.
- Black beard algae: Used where BBA is established across more than one tank.
Dosing & Administration Guide
- Before starting: Carry out a 30 to 40 percent water change on the tank being treated.
- Initial dose: 5 mL per 50 L of aquarium water.
- Daily maintenance: 1 mL per 40 L daily for 1 to 2 weeks.
- Dose per tank: Measure each system separately rather than estimating across several at once.
Product Specifications & Highlights
Key Features
- Double strength formula: Marketed as twice the concentration of standard Carbo-Max.
- Readily available carbon: Supports plant photosynthesis without pressurised CO2.
- Targets black beard algae: Works against BBA and similar nuisance algae.
- Scales across tanks: One litre covers a large display or several smaller systems.
- Long maintenance supply: Around 1,000 days of daily dosing for a 40 L tank.
Product Details
- Brand: Aqua-Pics (Australia)
- SKU: 725063
- Barcode (GTIN/EAN): 9336264003916
- Product Type: Additives & Supplements > Liquid Carbon Supplement
- Net Volume: 1 L
- Active Ingredient: Glutaraldehyde-based liquid carbon
- Dose Rate: Initial 5 mL per 50 L after a 30–40% water change; then 1 mL per 40 L daily for 1–2 weeks
- Treatment Capacity: About 10,000 L initial dose; roughly 1,000 days of daily maintenance dosing for a 40 L tank
- Other Sizes: 50 mL (SKU 725059), 125 mL (SKU 725060), 250 mL (SKU 725061), 500 mL (SKU 725062) and 2 L (SKU 725064)
- Target Environment: Freshwater planted aquariums


There are no reviews yet.