I've had my my new betta for about a month and a half so far, and I'm struggling to understand how to clean my 1 gallon goldfish bowl. Since it's a very basic bowl, it does not have an underwater gravel filter.
I perform a 50% water change every 3-4 days by siphoning water out with a Top Fin mini gravel vacuum and I'm unhappy that I do not have enough time to throughly vacuum the rocks before I lose 50% of my water. Whenever I pour the new 50% water in the bowl, I see a lot of debris float up from the gravel.
So my next experiment was just to perform a 100% water change. I'd remove the betta with a laddle (great advice from fishrpets) and then pour all the old water out. Next, I'd pour in clean aged/primed water and I'd still see debris float up. I was going to run the gravel under the sink to clear out all the gunk, but my friend told me that would kill all the beneficial bacteria that helps clean out the nitrites in my bowl.
How do I clean my gravel and bowl without fear of killing the beneficial bacteria? I plan to invest in a mini-aquarium in the future with a gravel filter in the future.
Thanks in advance for any help! Here's a pic of my betta a week ago.