As for the mandarin pkremmer hit it on the head, by the time you notice anything wrong it will most likely be to late. More likely you will not notice anything wrong and 60-90 days from now you will just find it upside down on the bottom of the tank or you will not find it at all. With the size of your setup any death can be catasrophic for the rest of the inhabitants if not found right away.
As for the other issues if you truly had ich it is not cured yet. It takes at least 6 weeks if not longer to rid ich from a setup with no fish in the tank. If you are moving anything between the two tanks then both are potentially infected.
I see now in another post you added a blue linkia. This is the hardest starfish to maintain and has no business being in your tank. Again, whoever is selling you this stuff and giving you this advice is doing you no favors no matter how nice and how credible they may seem. Bottom line they are making a buck off you at the fish expense.
Like stated before you need to slow way down and realize what your limitations are. Take some time and fill out the my info section on this site(acurately describe your setup and what you have for inhabitants) so people know what you have and can give advice.
I fully understand where you are at and appreciate your excitement. I am just trying to save you the pain because I have been there and made some of the exact same mistakes.
This is my second foray into SW keeping. I successfully kept FW for 12+ years to include breeding Discus and SW is totally different.
My first attempt at SW ended after about 18 months of total failure because I did not have a good source like AA and the other resources on the web and in print. I relied on the LFS who basically said sure you can do that. I killed countless fish and invertebre due to overstocking, lack of proper filtration, and very poor irresponsible advice. I was basically applying my years of FW experience to SW. Like many after my tank finally crashed real hard I swore of SW and returned to FW.
Fortunately after about 4 years I returned to SW and more importantly I found sites like this one.
Just trying to save you some of the same pain, frustration and needless expense that I did. This hobby is expensive enough.
If you look hard enough you will find people that tell you what you want to hear, but that does not make it right. I do some things that are the exception to the rule, but not everything you do can be the exception to the rule.
Right now you are headed for a major disappointment if you continue down this path. Please save yourself and the fish and take a step back a re-evaluate what you are doing.
You need to look at your setup as a large nano that is just completing the cycle(maybe) and stock accordingly. Anenome, corals and other complex inverts have no business in your tank for at least six months.
It is very difficult to wait, but without patience i this hobby you are destined to fail.
Now if you look hard enough I am sure you will find some who disagree, but let the majority and what you read in print be your guide.
At this point I would strongly encourage you to return what you have or at least QT in the 20g for 6+ weeks and start over. Nothing worse than starting out with an ich infested tank.
Now it is your choice to follow my advice and others or be condemed to make the same mistakes some of us did and learn from personal experince.
BTW, none of you questions are stupid, but ignoring some of the advice is.
Take care and good luck,
