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This is a rally tough question to answer as all the salts are a little different and everyone will swear with their brand. There have been studies done on the salts but none really recently.
For me, I have used Aquavitro for the last 2 or so years and like it.
The point of a media reactor is to have as much contact with the media as possible when water goes through. They were basically replaced just filter bags as means of passive filtration in the aquarium. With the reactor the water is forced through the media which makes it much more efficient...
At that size, buy a calcium reactor so you don't have to worry about the dosing pumps.
For the reactors go with the MR xl or monsters:
http://nextreef.com/mr1reactors.html
I will be running mp40s in my 210, just multiple ones.
With the HQI bulb you will be able to keep just about any coral out there. You can choose the bulb that goes in there which give you some control over the "vibrance" of the coral so that is not really an issue. The issue is the heat, what is the ambient temp of the room?
To add on to what NikkiT said, bangaii's are not schooling or shoaling fish. When they are juveniles they hang out in groups but as they get older and bigger they will split off. If you don't seperate them out, you will have some violence and probably death.
If this is for the fish tank (which I assume it is) for the top town box
http://www.avastmarine.com/ssc/do/product/rigging/Top-Down-Porthole
They also have an extra long one.
As far as macro lenses go, I have no clue. I know many of the people who have Macros for fish tanks say get at least...
Generally when people are mixing and storing water they run a heater and a pump or bubbler in them. This keeps the water up to temperature and aerated so when it is finally added to the tank there is little change in temp, salinity and aeration.
Generally you will mix water for a water change...
Arvin we just went through something similiar a few months ago. Nikki was coming home from visiting her brother in law when a kid ran a red light and hit her car on the rear passenger tire and spun it around. We went to the hospital but nothing was wrong and she walked out of there. We paid...
When I started in the hobby it was when my wife was in law school and we were down in Camden NJ. We went to a local LFS down there that sold us a ton of stuff that we had no business having in our tanks but we were not members here or on any website at the time and we should have done our...
If you can get a cell phone pic up of it that would make it easier to identify. Considering you are new it is probably diatoms which is generally a very common problem with a new tank setup and will burn off with time.
I really hate to be the bearer of bad news but here goes. You really need...
It looks like you are running everything HOB which is fine I did that for years so you don't really have a lot of extra room to play with besides the HOB fuge. I would probably keep as much as I could in there, but you could always look for more porous rock or try and change the design a bit...
What type of damsels are they? Also I have never heard of damsels that eat flatworms. I would seriously seriously seriously reconsider adding damsels to your tank.
BTW your rics looks amazing.