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Daniel132
Good day, aquarists. I bought a Resun DMS 500 aquarium, 90 liters, with something like a built-in sump in the back wall. I plan to set it up soon, but I'm afraid the stock protein skimmer won't be sufficient (and it seems dead to me). Please advise what is better to buy in terms of protein skimmers, and are there external skimmers that can draw water from the compartment to the skimmer and then return it back to the compartment? A hang-on skimmer won't work for me as I have no place to hang it due to the lid. I look forward to your advice.