<a href=showthread.php?s=&postid=10721720#post10721720 target=_blank>Originally posted</a> by dots
Is the denisty of Ferric Oxide less than the activated Carbon?.......I am pretty sure its not, and can double check if you want, I have a chem book about 10ft away, but its late and I get lazy when I am not at work....... with enough velocity it will probably be the other way around, but that is difficult to quanitify and to what degree.
Grinding the phoban down wouldn't nessesarily be a bad thing, it would have more surface area to absorb P04, move easier and faster to increase interaction. I used to use a filter sock and dump the exhaust through that, so if any particles did get through it was collected, I thought about suggesting that, but filter socks are personal preference and brings into another maintenance issue.
Currently I don't exaust mine into one as I have a BB tank and actually want more nutrients in my tank,
(my display drains into a SSB that I built which is also a lower velocity zone, so any debris settles there and feeds the SSB, the rest is pulled out through a top exit kinda like how the JBJ nano cubes work.) I digress......,
however I am currently thinking that a build up of misc granuelles could back pollute the tank, I am considering reusing the filter sock again for this reason....seems to be less clear without it as well.
Regardless, you should be using the ball valve with the reactor and have plenty of flow to adjust the fluidization. You should adjust it to where there is a clear visible portion below the filter as the materials "dance" around. If adjusted properly, and you use less media than you have now, in combination with carbon and change it regularly, leeching into the system will not present a problem. If it does and it is small enough to pass through, it is small enough to be picked up by the skimmer.
My favorite tanks are the clean, wide open, minimalistic cubes.......they look the best and create the illusion of a box of water the best without a bunch of coralline defining the edges of the tank......Though I prefer it....I am just giving you a hard time about it because you were asking about it. You have a bunch of coralline on your rocks that is already purple, you will have plenty to scrape in no time......buy a box of razor blades soon, you will need them!!!