The MiniBow should come with a filter. All filters I am familiar with cause some turbulence. Water and air turbulence are part of the operation and increase the nitrifying, etc., bacterial load which are part of the nitrogen cycle that breaks down the harmful ammonia and nitrates which poison the fish. Filters do more than filter out sediments in the water.
Whisper is recommended for fish that want less turbulence. The Jr filter that comes with the MinBow tanks may be a bit smaller than the Whisper 10i. An internal filter, of course, takes up more room than an external filter. No way I know of yet to get around the fact that filters cause water disturbance and take up some room somewhere.. There is some kind of filter I have seen mentioned in the forum that can be adjusted down. I am not familiar with it. You can try asking in the hardware forum, if no one offers the information here.
With the five gallon square tank you could more easily deflect the water flow, even putting in a divider to separate it off. But actually that is a lot of diy to start with and a simple set up might be more reasonable to start, unless you are the project do it yourselfer.
I do have smaller Bettas in 2 usg bowls. They require frequent water changes to be healthful. And the heater and lights are a whole other question then.
Sorry I missed the part about the 5 gallon MiniBow. My MiniBows are 2.5 and 3 gallons. Whatever filter comes with the MiniBow of whatever gallons is no doubt sufficient, and I would not look to get one different--unless it is undergravel. Then I would go for the 5 gallon square regular tank and customize it--put the various parts together.
Thank you. I just heard back from the MiniBow manufacturer and the MiniBow 5 comes with a Tetra MicroFilter. I looked at a picture of it on the internet and can't tell if the top part will be above the surface of the water and still create the waterfall effect, or if it is completely immersed in the water and might be less turbulent. I guess I will have to wait and see unless anyone has seen the Tetra Micro Filter in operation.
. There is some kind of filter I have seen mentioned in the forum that can be adjusted down. I am not familiar with it. You can try asking in the hardware forum, if no one offers the information here.
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