Rox .8 and reg gfo......scratching my head

[Ahogue21]

Ordered a reactor for my sr60 along with some rox.8 carbon and reg gfo well I didn't look at amounts needed but says not to have more than a 50/50 mix and you should always have less gfo

Well with the rox.8 I only need 5 tbsp but with the gfo I need 12.5tbsp (3/4 cup) (based on 50 gallons)

So do i just go with that and tumble the carbon a bit and go through it faster? Or is the rox.8 hard enough to take the tumbling with the gfo?

 

[Ahogue21]

Or just reduced the gfo way down and do 5 and 5?

 

[McArcher]

You don’t want to tumble them together.
If you only have 1 reactor, they should be mixed.
I would start by reducing the gfo some and see where that puts your PO4.

 

[reefndude]

I always use 1/4 or recommended amount of gfo. Takes longer to remove po4 but that's kind of the idea

 

[saltyfilmfolks]

You’ll not want to tumble the carbon.
Add gfo according to the numbers you get on tests. It’s not as efficient when it’s not tumbled , but does still work. When I do use gfo, I actually just rinse what’s in the bag already and add more.

 

[Skynyrd Fish]

I'd go easy on both. They can rapidly soak stuff up and shock your corals. Run a 50/50 blend at a quarter dose. In a Week remove it and add new, use a bit more if needed at that point. Test your water after the week for PO4. This will give you an adjustment of how much to use.