when you get a skimmer You should consider
1:How Heavy A Bioload
2:Total volume of tank
Its Good to have a bigger skimmer..look for ratings abit bigger than your tank volume
Also if bigger can use for your next tank in the future
Heavy Nutrient Tank With bigger stocking skimmer is good..will skimm out compounds better..
I Taught you Have A Skimz?Upgrading?
cheers!