[titus]

Hello,

You'll notice that larger skimmers designed for larger loads will have a longer and wider neck. This is because a large system will have enough waste to be pushed up such a long and wide neck without being too wet by the time it is collected. However, using the same skimmer on a small tank would mean it's gonna take a lot longer for the waste to reach the cup to be collected. So bottom line, try to make something that would work with your existing system. This is really a judgement call here.