Forgive me, for being a wet blanket, If I were you, I just jolly get a brand-new canister if the brand is Atman, Jebo, Jebao or whatever except for Ehiem or Fluval or other European brand. The China-made canister has the short lifespan of 1 to 2 years after that replace a new one. There is no point getting any spare parts...
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