It would work better ifthe water went thru the skimmer first.
The micro algae will be ok if you want to have a small arera for copods etc, but it will not do much for the tank as the area is to small as you will not grow enough algae.
Try Hollywood fish farm as they build custom made sumps and hav a similiar design on the reef tank.
i would not worry about mag/cal/alh in a cycling tank.
Wait until stock is to be added then test.
Dont add anything until tank is fully cycled. no need to get the levels correct as once the tank is cycled do a 50% water change and the levels should balance out.
best to aim for calcium levels of say 380-420ppm. alk of say 2.5-3.
But only after the tank has matured.
So at this stage just leave the tank and just take your time and let it settle in.
i would run the lights say 2-3 hours a day otherwise you might get bad algae.
Here are some pics of a few i have.
Some are very hard to get as the states takes them all and then sell them for big money.
They are a bit like acros as they do change colour due to water conditions.
I had some come in dark brown and they turned out to be the best red corals i have .
Also a few acros pics,
i am getting such awesome colors in my acros since the temperature dropped in winter,
Found that in summer you do loose a bit of colour due to the high temp.
Very nice fish, been in the tank for over 2 years,
does pick on some acros sometimes.
Will see if i can get some updated photps as these are over 6 months old. tank is looking better , If you can get better
everyone should put pics up so we can see what is around.?
will see if i can get some of mine this week,
You can get the ball rolling Layton. i am also getting sick of acros