Blennies in general seem to be quite the characters from what I have seen. For now I'm happy with my clown as he has accepted our skunk cleaner and goes to him quite often to be cleaned its so neat to watch

Would it be too much adding (fish/coral) for just 7 weeks in 20G tank?

Very likely

I have had lots of luck with coral RX. its worked great for me over the past year. Another neat little fish is a catalina goby. If you stick with nano gobies you can have a couple more fish. I have seen a couple nano goby tanks and i love them. This could be a possibility once your tank is a little more matue

Take it easy, money is still there. If you add too much they might end up down the drain.

K.. I'm just going on advice from others remember so I was told its ok. Plus all my frags have one or two heads so they were like 5bucks. But I'm not planning on adding anymore if I shouldn't. I was just told it would be ok. Not really sure what to think or believe in this hobby everyone has a different opinion it seems

Catalina Gobies are temperate, not tropical.

I was told it takes 4-6 weeks to cycle. I have cycles since mid august so if you count cycling time its 3 months, I was going from when it finished the cycle so 7 weeks ago my parameter were stable.

You count when you set it up, so your tank is actually 3 months old.

I think you would get a real kick out of a Pearly Jawfish. They are one of my favourite fish to watch.

Yeah they're kinda cool looking. Man theres a lot of gobies to choose from. Yeah I did a 5 week cycle but it started in an 8 gallon, half way in I moved into a 20 so all the sand rocks and the water was put in then I cycle a further 3 weeks, so 5 total, then added clean up crew, and at 6 weeks seeing they were doing well I began adding a couple cheap frags. It's a slow process I know and I should've waited a couple more weeks before adding coral but they're all fine except my xenia but I'm ok with losing it cause I hear they can become a nuisance. At 9 weeks we got a clown fish and tomorrow marks week 12 so Yaa.. lol