Aluminum beads vs GFO

[norfolkgarden]

I always know when the aluminum beads are saturated because they start to turn tan color.
Just started using GFO instead of aluminum beads.
Is there a visual indication that let you know the GFO is 'done'.

Thanks!

 

[GoVols]

I always know when the aluminum beads are saturated because they start to turn tan color.
Just started using GFO instead of aluminum beads.
Is there a visual indication that let you know the GFO is 'done'.

Thanks!

Love GFO, but you need to start off with a really small dose.
You can shock an reef, real fast if it don't take it nice and slow...

Can't tell by looking for exhaustion, but you could test the output's water if you tumble GFO, in it's own reactor.