Originally Posted by Lion Mom
I used to do one 50% a week on my 3 gals. and the bettas lived quite some time. BUT - I now do two 50% cleanings on all my 5 gals. & under. I really think the fish do better with the two cleanings a week - but that's just me.
And, yes, they are all filtered. :)
On an unfiltered - one 50% & one 100% a week is my understanding.
You are right.I read the sticky on the forum wrong.
On our one fish that is in the 2.5gallon I do 50% every other day. I do water changes so frequently because he is healing some nasty wounds though.
I am trying to keep it very clean for him.
Good to know once he is all better. I will do 2 50% water changes then.