PhosNet™ is a granular ferric oxide (GFO) with high porosity, high surface area and high binding capacity. It will rapidly remove phosphates and silicates from both freshwater and saltwater and will not release them back into your aquarium. It exhibits stronger binding than most competing products and consequently can reduce phosphates and silicates to very low levels. PhosNet™ also offers less dust and thus is easier to use than most competing GFO products.
For best results, PhosNet™ should be rinsed before use and placed so as to maximize the flow of water through it but not so that it tumbles against itself in flow. It may be used in a canister filter, media chamber, box filter, or any high flow area of a trickle filter. Use of a filter bag such as The Bag is recommended.
Use 50 g (1/2 cup) for every 200 L (50 US gallons) saltwater or 400 L (100 US gallons) freshwater. Leave product in place for 4 days, then test phosphate or silicate concentrations with either MultiTest™ Phosphate or MultiTest™ Silicate. If the concentration of the component you are trying to decrease has not dropped to around 0.02 mg/L, then replace the PhosNet™, otherwise leave in place until levels begin to climb again. As long as concentrations remain under control, the product is not exhausted. Over treating is not recommended. PhosNet™ is not an exchange resin and does not release anything into the water. It does not leach phosphate or silicate back into the water and may be removed, dried, and returned to service until exhausted. Continuous use of small quantities is better than intermittent use of larger quantities.
|Comparing Seachem Phosphate Removers
PhosGuard (Alumina Oxide)
PhosBond (GFO and Alumina Oxide hybrid)
A: PhosNet Is best used in smaller quantities and changed frequently. In an environment with an excessively high phosphate reading, PhosNet will exhaust rapidly (4 – 5 days). Place the product in a high flow rate area and test your phosphate levels, changing as needed. When you see that your level is below 0.2 ppm (mg/L) leave that portion of PhosNet in the filter. Continue to test weekly for phosphate until you see it begin to rise again. You will then know that it is time to change the PhosNet . If you have low levels of phosphate the PhosNet will absorb the silicate in your system. It’s inert and safe to leave in your filter.
A: Not at all! If it takes a phosphate absorber several months to reach its full capacity when the tank has high phosphates, it means that the media is exceptionally slow at absorbing phosphate. PhosNet needs to be replaced every 4 days as long as there is a phosphate problem because, given an infinite amount of available phosphate, PhosNet absorbs phosphate so quickly that it reaches its full capacity in 4 days. The 4 day replacement period is a function of how quickly the media works, not a function of how high a capacity the media has.
A: : The main difference between these medias is capacity. PhosGuard has the lowest capacity at 0.82 mg/g of PO4 bound, but is the most economical of the four medias. PhosBond has a higher capacity than PhosGuard at 1.19 mg/g of PO4 bound, and combines the benefits of PhosGuard and a pure GFO (strength, high capacity, and rapid phosphate absorption) while still being very economical. PhosNet has the highest capacity of the Seachem phosphate absorbers at 1.41 mg/g of PO4 bound, and is a pure GFO media. phosfiltrum is a super-high capacity GFO (1.71 mg/g of PO4 bound) that produces very little dust. This media has a higher capacity than any other GFO on the market.
A: We do not recommend it, as the tumbling action of a media reactor can cause this media to produce dust.