First no camera, guess I need to invest in one, been thinking about it

) I found test strips freshwater/saltwater, and have been using them, will get a better testing system when I go to town next week. SO far I have been keeping a journal, and here are the results as of this morning.
pH- 8.4
Hardness-250 ( this has been at 425 the last two days)
Alk- 240 ( this was down to 180 yesterday now back up to 240 today)
Nitrites (sp)- 0 , but was .5 the other two days
Nitrates- 20
Gravity has been pretty steady at 1.023, I did add about a half of gallon of water yesterday.
The directions are as follows:
Monday: 2 caps of Tech part A
1 cap of Tech part B
Tuesday: Reef Blend 1 tsp ( from reading this is food, and the bottle says more often, will wait for responses)
Wednesday: 10% water change
Thursday: 2 caps of TEch part A
1 cap of Tech part B
Saturday: 1 can of Strovontium
It has a Coralife hood, with daylight to moon phase on it, directions on lighting is welcome. The filter is a Aqua-Tech 20/40, and as far as I can tell regular filter in it. It has a Turbo fan for circulation. I did find that one of the corals (?) in it is a cabbage leather, or this is what I found a picture of. It does have some button polyps in it, and a urchin with lots of spines in it, which I think bites. It does have the one fish in it, havent found out what he is yet, but its little like a quarter. Oh, and the urchin hasnt moved in two days, how do I tell if its ok?? I have had problems signing back in, sorry its taken so long to reply back. Will take it slow and not add anything to it, I am pretty sure its going to cycle, too clean. It was a new tank, lol, and all of this started over a nano tank for the kitchen

) Which if I dont kill anything for awhile, I may go on and get. The tank is awesome to look at, and we really enjoy the moon phase at night. Thanks for all teh help, Sherry