Abac Фильтр APF 1000

First....youre an adult....get rid of the goldfish. Secondly, the canister should be under the tank, not on the counter for best results. Also, remember to replace the carbon often as it doesnt last forever. I noticed you cleaned the tank before putting the filter in. Bad idea. The water in the tank would have helped jump start your cycle. NEVER clean those ceramic rings in tap water as youll kill the beneficial bacteria. Also when doing a water change.....treat the replacement water before adding to the tank and only change 1/4 of the water in the tank (do not remove fish during this process and use a gravel vacuum....unplug heater first). Thing is....all you have is goldfish which dont actually need filtration. Keep the goldfish to get the cycle strong then after a month or two....flush them down the toilet....as I said....they are just gold fish. Get some real fish like African cichlids but you might want to start with something easier like south american cichlids. Just get rid of those cheap goldfish. I see youre a beginner and wanted to drop off a couple pieces of advice.

Is the big goldfish at the bottom of the tank ok ? He doesn’t look to good

Did it include any filter media with the filter or did you have to use the stuff you bought separately?

Looks like it had some space can you put biological media in it

What is a good technique to get this guy to suck up water dear Lord