Review on 🚀 Enhance Efficiency with Eheim 6664 Prefilter: A Comprehensive Review by Jnis Zels ᠌

I really liked it constructively, it is attached to the tube without problems, it should be universal. You can use each section separately, that is, in fact, it is 1 pre-filter with two cassettes, you can set aside one in reserve. Instead of a standard sponge, you can put a synthetic winterizer in the section, as they say, the upper sponge will hardly clog, but if you put a synthetic winterizer in the bottom one, it will be used more evenly. So far, I installed it as it is, in a week I'll see how it clogged up and I'll think about how to upgrade :)