I agree wiith all the advice you'veb een given so far.
I'll add few things. Clowns do NOT need an anemone. They will host almost anything (e.g. frogspawn or hammerhead corals). Nem's shrivel and expand regularly.
Lighting in your tank will not support anything but fish. You need multiple T5, MH
, or quality LED
lighting if you want to start adding corals, etc.
My anemone rant!
Sorry, but anemones will never live a full life in our tanks. That anemone can gow to 2+ feet in the ocean and live 30+ years. I had one that survived over two years in my established tank and it grew to over a foot. That's in a 125 gallon tank with a deep sand bed (6" - 9").
You don't really hear of many anemones living 5 years+ in our tanks. Most perish in the first few months.
I for one will never buy an anemone again. If enough people do the same we will self regulate the industry and stores will stop carrying them.
Clown fish do NOT need an anemone to host. My wild caught true percula are now hosting a frogspawn. Clown fish will host almost anything given time.