Carbon+
G3000 · 500ml
Essential carbon supplement for vibrant, healthy planted aquariums. Waterbox Carbon+ delivers a highly absorbable liquid carbon source that promotes lush plant growth, vibrant coloration, and a balanced aquarium ecosystem. Maintaining...
Or build it into a bundle — save up to 6% ↓What it is, and who it is for.
Essential carbon supplement for vibrant, healthy planted aquariums.
Waterbox Carbon+ delivers a highly absorbable liquid carbon source that promotes lush plant growth, vibrant coloration, and a balanced aquarium ecosystem. Maintaining proper carbon levels is essential for supporting photosynthesis, improving nutrient uptake, and reducing nuisance algae in freshwater planted aquariums.
Carbon+ is ideal for aquariums that do not utilize a CO₂ injection system, providing an efficient alternative carbon source for aquatic plants. It can also be used in systems with CO₂ supplementation when additional carbon dosing is required for enhanced growth and stability.
Key Benefits:
• Supplies a readily available carbon source for aquatic plants
• Promotes strong growth, color, and overall plant health
• Helps reduce unwanted algae through nutrient balance
• Supports photosynthesis and nutrient absorption
• Effective for both CO₂ and non-CO₂ planted aquariums
Directions for Use:
Use 1 ml per 100 L (25 gal) of aquarium water daily.
For heavily planted or high-demand aquariums, dosage may be increased up to twice the standard rate.
Build around the Carbon+.
It's already in your system below. Add the flow, filtration and dosing around it and the discount starts working — tiers climb as the build grows, and the reef meter fills with it.
Pick the right one, not the biggest one
The honest line-up from supplements. Most buyers reading this page should buy the middle column.
Micro Elements
Carbon+
Coral DipAsked before checkout
The questions our support inbox actually gets.
Does it ship quickly?+
Orders placed before 2 PM ET on a business day leave the same day. Tracking is emailed the moment the label prints.
What if it's the wrong fit for my tank?+
Return it. 30 days, no restocking fee, refund to the original payment method. Better: tell us your tank first and we'll spec the system for free — half of all returns are sizing problems.
Who handles the warranty?+
We do. Everything carries the manufacturer's warranty and we run the claim for you — one email to us instead of a ticket queue.
How does the bundle discount work?+
Add items in the bundle builder: 2+ items saves 5%, 3+ saves 8%, 4+ saves 12%, and 5+ saves 15% off the whole system, applied at checkout.