First, I agree with what has already been said. To add a few comments:
20lbs of LR
is the absolute minimum if you intend to use the LR
as a bio filter. 30lbs...or even as much as 40lbs would be more like it.
The dwarf lion and the eel are both predators. They need high protien foods and will be messy. Translated, this means they both will put a strain on the bio filter. A dwarf lion and one of the smaller eels would be about it for a 20 IMO
The clown (perc or ocellaris are my favorites) would be good. Maybe a couple of blue or green chromis. There are several fish in the blennies and gobies that would be good for a 20.
I think you'll find, although the Skilter will pull some gunk from the water, that you will want to upgrade the skimmer later. Aqua C Remora makes a good skimmer. Be sure to get the MaxiJet pump though...Rios tend to give trouble.
I would suggest the next money you spend be on a copy of "The Concientious Marine Aquarist" by Robert Fenner. This is an excellent book that covers all aspects of SW
and is worded so you don't have to have a Phd to understand it. It will pay for itself quickly.
Although we are happy to answer any questions you have, there is a search option on this site. You might read some of the old posts that relate to things you have questions about...there is a lot of info in the archives.
I don't think the 18" 15w bulb is enough. At the least, you need two of them. If you could find a double strip that uses 24" 20w bulbs, that would be much better. If you're going to use one bulb, I'd go with a 50/50. If two bulbs, I'd use one white (6500-10,000k) and one actinic (blue). A better solution, if it's in the budget, would be a 65w PC
50/50. Custom Sealife makes a light called a Smartlite that would do well unless you want to build your own.
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