150G Tank stocking ideas

[mexiconyeric]

I have a 150 and would like to put a couple of snowflake eels in the tank and would like suggestions as to anything to add with them.

 

[mexiconyeric]

I also have a 125g with 2 black and white damsels, 2 yellow tail damsels and 4 green chromis. I am going to connect the two tanks and have a large system.