where to install marine pure balls

[acropora4u]

I have a 240 gallon cube with center overflow.. current filtration is about 200 lbs. live rock , 200sss skimmer. sump is running a small refugium. I want to add marine pure spheres but unsure if its best to place inside overflow ( in center of tank ) or in the sump.. please give your opinions. thanks ,Dean

 

[reefwiser]

Best place is in the sump after your filter sock. Placing in a free area Detritus.

 

[acropora4u]

Thanks reefwiser. Skimmer is in the box after filter socks. Then is the refugium box and then return box. What about under filter socks ?

 

[reefwiser]

Yes that would work.

 

[blacktippr]

If you run the big marine pure blocks, they need very slow flow for denitrification.