post carbon filter necessary?

[Johnb123]

how necessary is a post carbon filter (last stage after the membrane) for a reef aquarium?

 

[igadget56]

You don't put carbon after the RO membrane!

 

[shifty51008]

I agree you dont want anything after the membrane except the di resin. If your system has the carbon filter after the membrane then that is for drinking water not for your tank.

 

[jayball]

X3, order should be: sediment filter, carbon block, membrane, di resin. Any additional stage should be next to the similar one.

 

[Allentown]

The post carbon filter is the GAC in your media reactor in your system.

 

[Johnb123]

http://www.freedrinkingwater.com/support/wp-content/uploads/CTOP-filter-change-figure-h1.jpg

so that last stage is for human consumption only right?

 

[shifty51008]

http://www.freedrinkingwater.com/support/wp-content/uploads/CTOP-filter-change-figure-h1.jpg

so that last stage is for human consumption only right?

Yes

 

[Johnb123]

i have 150ppm after my r/o unit it's clearly dead but didn't notice until now which is 2 weeks after having added my fish how serious is this? do i urgently need to do a 30-50% water change? thanks.