If you can buy it do so once you have one and see what it removes you'll be glad you did, place an add on here looking for one for sale people always have small skimmers left from tanks when they upgrade that they just store away. I run a 33g with no skimmer or sump you got to do regular water changes and light schedules, I don't run halides on this tank and I kelp it lightly stocked and clean.
Welcome to the reef world cheers
