Tosakin Keeping Basics? Options

[Chinmo]

hi Sirs! i be getting 2-3 tosakins this coming weekends... i'm planning to keep them in a 3by2 by 1 blue tub. issit okie to keep tosakain in square tub? can i use sponge filter for filteration? water be changed everyday 50%... be feeding them ranchu lord and saki hikari.

Can all Tosakins keepers pls advice me what i can do better?

[hermanto]

Hello
I use clay pots to keep my tosakin:





I use no filter nor aerator. I think this clay pot is superb, it is better than the cement pot. However, I don't know if you can find this kind of pot in Singapore? This kind of pot is very abundant in Indonesia, and very cheap. (Glad Indonesia still have something to be proud of, )
The alternatives are the cement pot. If not available, then the fiber tub can still be used.
The cement pot still need aeration, and must have a schedule to change the water. The schedule depends on the sunshine you get. If you put the pot in the cool shading place, the schedule can be longer. If you put it directly under the sun from morning to dawn, then you need to change it more often, might even consider once a day! And how much of green water do you tolerate? It will affect your schedule.
The worst alternative, but sometimes we have no choice, is to put the tosakin in a square fiber tub with biological filtration. Of course the fish can still live healthy and happy. But it doesn't promote the development of the tail (correct me if I am wrong). So if you must use it, then use all creativity to minimize the water current but still good water quality and oxygen.
From my experience, I conclude that tosakin needs:
1. small environment. (But not to small so as to prevent it from swimming freely) This smallness requires it to make a lot of stops in its swimming. So it doesn't have to move forward all the time, which will prevent the tail to open/bloom. I think this will train the fish to open its tail (flip), and will eventually make the tail grow beautifully.
2. no current. Similarly, water current will make the fish trying to counter the current by closing its flipping part of the tail, hence negatively affect the development of the flipping part of the tail.
3. water depth of about 20-30cm is enough.
4. Of course the fish still need oxygen!
Hope it helps.
Regards,
Hermanto