Originally Posted by BETTACHKALOVE
So my question is it really better to do 100% water changes like i do and many other people on the forum? Then you never have problem like that and don't have to worry about worms that can affect your betta.
Also i don't understand even if you vacuum the gravel regularly you still don't get all debris out without 100%?
Also i am wondering if you don't take betta out while you vacuum and all that dirt comes up is it can get them sick?
This forum saying that filters are optional for bettas so why would we all do 100% water changes? Or 50% and 100%?
100% water changes are not always a viable option (or sane option, lol) for most people. For example, if you have a 20 Gallon sorority, it would be extremely difficult and laborious to do a 100% water change on it. You'd have to remove all the females, remove all the decorations, take out ALL the gravel. It is simply far too much work and it is much easier to do smaller water changes on a filtered, cycled tank.
Just because people said filters are "optional" doesn't mean you don't need one. Certain people have preferences and certain sizes of aquariums are useful to have them or not have them.
The betta won't get sick from random particles coming up from underneath your gravel. They are more likely to ignore it, and there is not really any type of particulate matter that will harm your fish. At least not any I can think of at this moment.