
Prior to that, he only used tetra filters, there were 1200 (an analogue of this eheim) and 800+. Tetra filters are good, like filters, but literally after a year they start to flow and, with age, flow more and more. It lasted me 4-5 years max. I decided to change to another one, let's see how this one will go. Eheim works fine, I didn’t add or change the backfill, I think that’s enough, it filters normally, but it makes a lot more noise than a tetra.

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