After years of keeping my bettas in cups/jars due to the insane amount of fish I have at once... I am finally building a betta barrack system. Well more like two or three lol. Essentially, to those who don't know, its a big divided tank/jar system in which dirty water is recycled through a giant (going to be 30 gallons for me) filter. Twice a week I'll go in with 25% water changes on the sump filter and my fish will be in constantly clean water.
I should be starting next week. I'll update then :D