ESV GeoMarine
crushed coral. Its aragonite crushed coral. Also used by many as co2 reactor media.
Mike, I used an inch or so of Geo-Marine in my tank. It looks good and covers my foam.
I suppose it does collect detritus like Jerel says, but I wanted something there. I can vacuum the front portion easy, if I wanted.
I have a little finer sand, in the back behind the rock, for the conches to hide if they wish, {however they seem to like the cc} and for my
leopard wrasse to hide in.
There seems to be a tons of worms living in it. All kinds. I must say, IMO, worms of all species seem to prefer the courser gravel as compared to fine sand. For sure bristle worms do. I also have some piles of rubble in various areas. The bristle worms love that also, as do all the crabs. And the pods.
However, my new tank, is to new to give you along term view of the use of the GeoMarine.
You need to ask yourself;
-how easy will it be to clean the gravel bed if needed?
-will the amount of current keep a bare bottom clean or will I still have to siphon it clean? Like the above, hard to do in a large tank.
I am going to add a pair of pink spotted watchmen gobies to keep mine cleaned. They do a good job at that and I dont rely on the beds life to do anything. Of course thats only good for an inch or less, which is about all they turn over during feeding.
