Filtration has three chambers. I will tell what's in each chamber.
Chamber 1- Mechanical Sponges ( Think there is about three or four individual sponges ).
Make sure to clean these out regularly, they're good but become nitrate farms if not maintained
Chamber 2- Bio Balls ( on bottom ), Activated carbon bag ( on top ), Ceramic ring Bag ( in middle ).
Bioballs act as nutrient traps and are detrimental according to most. the surface area for bacteria is provided much more effectively by LR making the bioballs obsolete in SW as well as the ceramic rings.
Chamber 3- Submersible pump.
A lot of people with these AIO tanks use one of the back chambers to grow chaeto for nutrient export. the add a small light, sometimes a submersible one. you could take out some of the sponges, move the carbon (which should also be rinsed often) to the first chamber under or between the sponges, and you'll be able to use the second chamber for chaeto.
There is also a modular surface skimmer that securely attaches to the the skimmer's intake only when it is running to keep away the annoying foaming in the pump.
not quite sure what you mean here about the foam from the pump, but surface skimming is good
The tank shots out it's own flow of water. I predict to be from medium to strong currents. It all depends on where in the tank your talking about. Some parts of the tank have a lower flow than others.
thats good, you may want to consider a supplemental PH later on. what would be helpful is the Gallon Per Hour rating of the powerhead in chamber 3.
On lighting there are two main lights and two moonlights.
Main lighting- One 10,000K Daylight 24w Compact flourescent lamp and one 7100K Atcinic blue 24w Compact Flourescent lamp.
Moonlighting- Two small moonlight bulbs ( am not sure about the wattage of the moonlight bulbs.
I now recall this from the other thread, the moon lights are just for you, they don't affect the inhabitants much.
I have 20 lbs of sand and about 6 to 7 pounds of live rock.
This is an ok amount, some people will say 1-2 lbs/g of rock, I don't think this is a necessary rule, I also don't like my tank filled to the brim with rock. what counts here IMO is surface area, the greater the area the more room for beneficial bacteria to live
I hope this helps you a lot.
Does help a lot, thanks!
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my comments in red italics