Seachem PhosGuard 4 L / 1 gal — Removes Phosphate & Silicate

Overview

PhosGuard, 4 L / 1 gal, is a selective filtration media designed to quickly remove phosphate and silicate from aquarium water in both marine and freshwater setups. The media’s bead-like, highly porous structure promotes water flow around and through it, helping to maximize contact time without hindering circulation. This design supports clear water and helps keep nutrient levels from rising too high in a range of systems.

Key benefits

• Removes phosphate and silicate from marine and freshwater aquariums with practical efficiency.
• Irreversible binding helps minimize the chance of re-release, contributing to consistently low residual levels.
• Effective in both fresh and saltwater, with seawater use yielding well-defined results under proper flow and dosing.
• Highly porous, bead-shaped media that supports easy water flow and expands filtration capacity.

How it works

PhosGuard employs a binding mechanism that captures dissolved phosphate and silicate as water passes through the media. Once bound, these compounds are held in place, reducing their availability in the main tank. In seawater, the performance is often most apparent when the media flows freely and maintains good contact with the water.

Usage guidelines

• Rinse PhosGuard before use to remove dust or fines, then place it so water can flow through efficiently without excessive tumbling.
• Position the media where the flow is strong enough to pass water through the beads, but not so turbulent that the beads collide with themselves.
• Dosage guidance: 85 mL (⅓ cup) per 200 L (50 US gallons) of saltwater or 400 L (100 US gallons) of freshwater.

Practical tips for best results

• Monitor tank parameters regularly and adjust as needed based on bioload and feeding; replace media when efficacy appears to decline.
• For best outcomes, integrate with routine maintenance and ensure adequate water flow through the filtration media.

Whether you manage a delicate reef setup or a community tank, PhosGuard offers a straightforward option to help manage nutrient levels. Its design prioritizes passive filtration that works with your existing system, rather than requiring complex changes to routine care. Keep expectations aligned with system conditions, and consider PhosGuard as one part of a broader approach to water clarity and balance.