What is the difference between regular and HC German GFO? The main difference is that HC is roughly 1.5 times more effective at removing PO4. It is also much more dense, thus requiring more flow than regular GFO. It also withstands more flow before grinding down to a fine dust. Low grade GFO quickly pulverises with too much flow.

 

As with all ferric oxide media, alkalinity levels may drop when used.

Be sure to monitor alkalinity and adjust as needed

Rinse well before use

 

Although this is HC GFO, excessive tumbling my still cause it to grind / dicintegrate and send GFO dust into your sump / tank. Unlike biopelets GFO must NOT excessively tumble in your reactor. Tumbling will cause some grinding.

 

USAGE: The amount used depends of the amount of P04 your system produces and what level you want to drop it down to. We recommend starting with 1.5 Tablespoons per 10 gallons and adjusting from there.

 

Material Safety Data Sheet

No. 1907/2006/EG

 

01. Identification Of the Substance

Name of Product

Ferric Oxyde

 

02. Hazard Identification

 

Classification

Subject to the regulation 67/548/EWG or regulation 1999/45/EG:

 

Physical-chemical hazards: not known

Human hazards: not known

Environmental hazards: not known

Other hazards: none

Danger symbol: none

R-phrases: none

 

Composition/Information on Ingredients

 

Product Description

Ferric(III)-oxidhydrat, FeO(OH) / Ferrichydroxid

CAS-No.: 20344-49-4

EINECS-No.: 243-746-4