I didnt notice a huge difference in parameters after going to larger media, but i liked it because i did notice the dissolving was much more even.
Flow through the reactor was better, and less channeling through the media.
I had switched from the old ARM because i was sick of the mush it made after a month or so, in the base of the reactor.
Caribsea has come out with its version of the larger media, im gonna give that a try...my last try with hagen`s large substrate was a bit of a disaster...i think the barkmulch in there shoulda been a sign not to use it in the first place... :P
Marc.
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