Phosphate Media for Saltwater
G2300 · 500ml
Effectively reduce phosphate and silicate for a cleaner, healthier aquarium. Waterbox Phosphate Media is a highly efficient filtration media designed to absorb and remove excess phosphate and silicate from your...
Or build it into a bundle — save up to 6% ↓What it is, and who it is for.
Effectively reduce phosphate and silicate for a cleaner, healthier aquarium.
Waterbox Phosphate Media is a highly efficient filtration media designed to absorb and remove excess phosphate and silicate from your aquarium water. Elevated phosphate levels can lead to unwanted algae growth, reduced coral coloration, and long-term instability in both freshwater and saltwater systems.
By maintaining phosphate within the proper range, this media helps create a cleaner, clearer, and more balanced environment, supporting vibrant coral growth and healthier aquatic life. Regular use as part of your filtration routine will keep nutrient levels in check and prevent the conditions that lead to nuisance algae.
Key Benefits:
• Rapidly absorbs excess phosphate and silicate
• Helps prevent nuisance algae growth and discoloration
• Enhances coral coloration and overall water clarity
• Promotes a stable, low-nutrient environment
• Safe for both freshwater and saltwater aquariums
Recommended Levels:
Maintain phosphate between 0.02–0.05 ppm in reef aquariums for optimal results.
Directions for Use:
Use 25–100 ml of media per 100 L (25 gal) of aquarium water.
Replace every four weeks, or sooner if phosphate levels begin to rise.
For best results, use in a fluidized media reactor.
Do not rinse before use.
Build around the Phosphate Media for Saltwater.
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 filtration. Most buyers reading this page should buy the middle column.
Starter Bacteria
Phosphate Media for Saltwater
SHARK ADVAsked 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.