TLTGF said:
thanks for the tip, on that note.... what would be a proper size if i were to have a full grown lion with other fish as well... are we talking 180+ or much bigger... like i have said many times, i am very new...
It's okay to be new, and don't be afraid to ask questions! The bigger the tank the better! Lions don't need swimming space, but the more water volume you work with, the more stable your water conditions will be.
im reading as much as possible and keeping an open mind for fw or sw, but i would like to do salt, i've been to some sites that say sw is for experienced only, tons of maintainence and very meticulous, others say not bad at all even for a novice aquarist.
Good, keep reading

Like Mr. Comptonass said, a Book is only a small part of the information that is available. Look at everything with an open mind, and take all opinions into consideration, and make your own final judgements based on what you have learned. Of course there will be trial and error periods, as well as learning from mistakes..
As far as the maintenance goes, CentralMayhem put it best. It all depends on how you set it up.
If you wish to buy multiple canister filters, powerheads, and install an undergravel filtration system, you are looking at alot of maintenance, and possibly a serious problem in the future. Go to your local PetCo, this is how they tell people to set up saltwater tanks. Their quality of Saltwater fish is a good reflection of how effecient this system is.
Like I stated before, the problem with all of these filtration methods is that in due time they will become clogged, causing a build-up of detritus. This is dangerous, because it can sufficate your nitrifying bacteria, which will then cause ammonia to build up in the tank. Ammonia is very toxic at a high pH, such as is in a saltwater tank. Also, the build-up of detritus will release an excessive amount of Nitrates into your tank, which will eventually lead to a buildup of dissolved waste and acids, which then will crash your pH if your water is not properly buffered. Wet-Dry, Canister, and Undergravel will all in due time create a build up of detritus, leading to an excessive amount of Nitrates. You do not want any extra Nitrates in your tank if you can help it, as Lionfish already put off a large amount of waste.
The concept of a 'Natural' aquarium is much more effecient, stable, and favoritable, especially for Lionfish. When using LiveRock and LiveSand as your methods of filtration, not only do wastes get broken down into Nitrate, they also have 'de-nitrifying' properties. This means your filtration methods will not only help break down fish waste, it will also stop Nitrates from accumulating in your tank. Many of the algaes and organisms that live within a live sand bed, or LiveRock, will eat Ammonia, Nitrite, and Nitrate, helping keep your tank clean, with less tedious maintenence. I would also reccomend adding a large clump of 'Calerpa' to your tank, which is the green vegitation that helps to consume nitrates.
I can go into further detail, but I would be repeating myself.. I already discussed the pros and cons of this

If anyone has specific questions, let me know and I'd be glad to help!
I am assuming you want mainly a 'Fish only' tank.. If you want to have a 'reef' tank with corals, anenomes, and other inverts.. Then you might want to re-consider your plans. This, infact, does take a little more time and effort, as well as maintenance. You will often spend much of your time feeding your special corals, or testing your water quality, instead of enjoying your fish.
Do not overfeed your Lionfish. They can suffer from Fatty Liver Disease, as well as pollute the tank pretty quickly.
Any Saltwater tank needs the best Protein Skimmer you can afford. This is the most important part.