more fuge info and tank pictures
for those that didn't beleive my post and wanted pictures.you can see my tank here,
http://www.manhattanreefs.com/forum/sale-trade/23817-parting-out-my-75-reef-leathers-corals.html
I actually just sold everything out of the main tank. Below you can see the refugium, even though it isn't very well lit. I still have the refugium (which I hope to move with me or sell I am still debating) and will take a few pictures when I get a chance, as I won't be home this weekend. The main tank is pretty much empty now

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for dosing, I added calcium to my top off water, calcium I made, meaing pickling lime converted with acetic acid in minimal water, then spun out the solid crap (I work in a lab). and diluted with topping off water. Strontium,MB weekly, Iodine every 3-5days, Iron weekly. Also KM Essential Elements monthly.
Other then that only krill or a piece of fish every few days to feed the grouper. I use a fluval as my return pump, and in it I have some activated charcol, some Phos-X (mostly due to the problem I describe below, needed help reducing phosphates, but I only change it out once a year) the rest of the fluval has some small bioballs. basically I like the fluval as it filters out some small crap, and was an inexpensive quiet return pump.
Personally I think a fuge is the way to go. If I had to do it again, and I am thinking about it should I actually get to set up a tank again. I would make it out of a 55gal. Where I would have 3 chambers. The middle one would be for the water comming in from the main tank. one side with the fuge, and the other side for the return water. My refugium was growing more rapidly with slower water exchange, it was also easier to get the plants to grow throughout the whole chamber. However the water going into the sump, was taking some air with it, and the airbubbles were getting into my return pump, which is a fluval 404, and causing it to make noise, blow bubbles in the main tank. The middle chamber could also be used as a quarantine tank.