
Phytoplankton
G2700 · 200ml
Nutrient-rich liquid food for corals and filter feeders. Waterbox Phytoplankton is a premium algae-based liquid food that provides essential nutrition for a wide range of reef organisms. This carefully balanced...
Or build it into a bundle — save up to 6% ↓What it is, and who it is for.

Nutrient-rich liquid food for corals and filter feeders.
Waterbox Phytoplankton is a premium algae-based liquid food that provides essential nutrition for a wide range of reef organisms. This carefully balanced formula blends phytoplankton, zooplankton, and vital nutrients to support coral coloration, growth, and overall system health.
Phytoplankton serves as a natural food source for soft corals, sponges, clams, and filter-feeding invertebrates, while also nourishing beneficial microorganisms such as copepods and zooplankton. Regular feeding with Phytoplankton helps create a more vibrant, biologically diverse, and balanced reef environment.
Key Benefits:
• Enhances coral color, growth, and vitality
• Feeds soft corals, sponges, clams, and filter feeders
• Supports populations of zooplankton and copepods
• Improves overall biological balance and biodiversity
• Provides essential nutrients for a thriving reef ecosystem
Recommended Use:
Ideal for soft corals and filter-feeding invertebrates.
Directions for Use:
Add 10 drops per 100 L (25 gal) every two days.
Do not dilute or mix with other coral foods in one container.
Avoid overfeeding, as every aquarium has different nutrient demands.
Refrigerate after opening.
Build around the Phytoplankton.
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 food. Most buyers reading this page should buy the middle column.
Asked 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.

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