Perfect Corals Catalytic Activated Carbon & GFO Filtration Kit — 1.0 lb Each
Transform Your Tank with Cleaner Water and Coral-Ready Chemistry
Looking for a straightforward way to control phosphates and dissolved organics without juggling multiple vendors? These two media work best when run together — GFO locks down phosphate before algae can take hold, while catalytic activated carbon strips out the yellowing compounds, odors, and toxins that quietly degrade water quality in any reef tank. Serious reefers know that crystal-clear, chemically balanced water isn't optional — it's the foundation everything else is built on.
The Granular Ferric Oxide in this kit is built around a crystalline α-Ferric oxide hydroxide structure with a high surface area, giving it exceptional phosphate-binding capacity at the molecular level. Lower phosphate directly supports SPS and LPS calcification, reduces nuisance algae pressure, and means less time scraping glass. The Catalytic Activated Carbon is a virgin, coconut shell-derived granular carbon — originally engineered for water purification — that targets dissolved organic compounds, chlorine, chloramines, and hydrogen sulfide while restoring light penetration that your corals depend on. Both media ship ready to run, and the two included rust-proof mesh bags mean you can have both in your sump within minutes of opening the box.
PACKAGE CONTAINS
- GFO (Granular Ferric Oxide) — 1.0 lb / 454 g
- Catalytic Activated Carbon — 1.0 lb / 454 g
- 2 reef-safe mesh filter bags (5.5 × 7.48 inches) with rust-proof plastic zippers
QUICK STATS & DOSING GUIDE
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GFO Starting Dose: ~1 tablespoon per 4 gallons of tank volume; rinse before use until water runs clear
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Carbon Starting Dose: Up to 1.25 cups per 100 gallons, or 2 tablespoons per 10 gallons of tank volume
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Recommended Method: Mesh filter bag in sump or high-flow area; media reactor compatible (GFO)
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GFO Replacement Schedule: Replace when phosphates begin rising after initial use; typically every 4–8 weeks
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Carbon Replacement Schedule: Remove after 3–4 weeks or when yellowing returns; use bucket test to gauge need
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Form: Granular (both media)
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Best For: Reef tanks, SPS/LPS systems, tanks with elevated phosphate or visible water discoloration
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Compatibility: Saltwater aquarium and marine aquarium use; carbon also compatible with RO/DI filtration systems
WHY BUY FROM THE CORAL BOUTIQUE?
At The Coral Boutique, we stock media we actually run in our own systems — if we don't trust it in our reef tanks, it doesn't make it onto our shelves. When you pick this kit up from us, you're getting the same filtration approach we rely on to keep our water dialed in, backed by a team that can actually talk through your reef chemistry with you.
