I have 1 x 250 watt MH 14000k and 2 x actinic PC.

I only dose manualy from time to time. I first was using IO salt, then switched to H2O in hope that I would not have to dose for KH but it did not work and I had to dose just the same. So I decided to lose that salt as it was way too expensive for what it was and I still had to dose the same so no point paying more.

I am now using IO Reef Crystal and now I don't have to dose for KH anylonger. I still have to add a bit of calcim/magnesium twice a week. I use Seachem calcium.

My next step will be eventualy to add a dosing pump and forget about it. I only change the water about 20% once a month and I have no nitrates because of the micro algae. Worse thing about the Osaka aquarium is that there is no room for a regular sump in the cabinet unless it is modified or a custom build sump is made, so no sump on mine, only a canister filter and a Deltec 300 skimmer.

Very nice! Work in progress? How big is your tank and any more info? Your rockwork looks cool to. Is that one of those magnetic rocks on the back of the tank?

Yes work in progress. As you see this pic the tank is already different as I added 2 barnacles cluster and a quite large turbinaria.

The rock that hang on the back wall is holding in place with some braket attached to it. I used 2 spare plastic braket from my JBJ auto top off system and attached one braket on each side of the rock, and those braket are holding the rock in place. I wanted to have an overhang to put coral on it and try to hid the equipement that way.

This liverock is quite heavy so it would require quite a magnet to hold it. I had no idea there was such thing as a magnetic rock? any link?

I use this type of braket to hold the piece of liverock to the back wall:

http://www.autotopoff.com/MISC/mount.jpg

http://www.autotopoff.com/MISC/mount.jpg

I have 3 of them. The magnets in the ones I have are not very strong so I have to support them so they dont fall down if too much weight is put on them. They are like these. http://www.jlaquatics.com/phpstore/s..._ID=dc-st28763
You can also make your own.
http://www.reefkeepingforums.com/index.php?topic=211.0

Interesting idea for the frag rack!

very nice indeed, good work