Two Little Fishies PhosBan GFO Phosphate Adsorption Media (150g) fit check
Two Little Fishies PhosBan GFO Phosphate Adsorption Media (150g) is a phosphate media from Two Little Fishies. Listed features: Granular Ferric Oxide (synthetic ferric oxide hydroxide granules); Removes phosphates from saltwater tanks and also adsorbs silicate; Does not release adsorbed substances back into the water.
Two Little Fishies PhosBan GFO Phosphate Adsorption Media (150g): fits roughly 10-158 gallon systems. Specs, compatibility math, sizing risks, and…
Who it is for
Good fit for
- ✓ 10-158 gallon systems, per the catalog fit range.
- ✓ Planned, measured use matched to the system's real water volume.
Not a fit for
- ✕ Tanks under about 10 gallons; it is sized above them.
- ✕ Systems over about 158 gallons without adding capacity elsewhere.
- ✕ Fixing an algae or nutrient problem without testing first.
Listed features
- Granular Ferric Oxide (synthetic ferric oxide hydroxide granules)
- Removes phosphates from saltwater tanks and also adsorbs silicate
- Does not release adsorbed substances back into the water
- Use in reactors or media bags with moderate flow
- Recommended dose 50g per 50 gallons (saltwater)
Specs checked against bulkreefsupply.com.
Compatibility math
Build role
Example: Two Little Fishies PhosBan GFO Phosphate Adsorption Media (150g) belongs in the plan only if it solves a real stability or maintenance job.
ReefCrafter keeps optional upgrades behind core stability requirements.
Risk notes
- Skipping RODI planning because tap water is cheaper often turns into a more expensive algae fight.
Professional fit context
- Check source water, RODI stage count, salt volume, test cadence, and media dosing caution.
- Two Little Fishies PhosBan GFO Phosphate Adsorption Media (150g) fits roughly 10-158 gallon systems; confirm that range against the final display volume, sump volume, and livestock plan.
Alternatives to compare
- Bulk Reef Supply BRS Single Body GFO/Carbon Reactor
Catalog fit range 5-150 gallon systems (budget tier).
- Seachem PhosGuard 1L
Catalog fit range 20-150 gallon systems (budget tier).
- Two Little Fishies PhosBan Reactor 150
Catalog fit range 20-150 gallon systems (balanced tier).
Full spec snapshot
- Category
- Water / Media
- Build tier
- Balanced
- Estimated price
- $27
- Tank fit range
- fits roughly 10-158 gallon systems
- Format
- Phosphate Media
Related reading
Questions
What tank size is the Two Little Fishies PhosBan GFO Phosphate Adsorption Media (150g) for?
ReefCrafter's catalog fit range for it is 10-158 gallon systems. Confirm that against your final display volume, sump volume, and livestock plan rather than the box label alone.
What should I compare the Two Little Fishies PhosBan GFO Phosphate Adsorption Media (150g) against?
Bulk Reef Supply BRS Single Body GFO/Carbon Reactor (Catalog fit range 5-150 gallon systems (budget tier)); Seachem PhosGuard 1L (Catalog fit range 20-150 gallon systems (budget tier)); Two Little Fishies PhosBan Reactor 150 (Catalog fit range 20-150 gallon systems (balanced tier)).
