I noticed this weird white fuzzy growth at the bottom of my betta tank (it is a cycled tank) about one week ago.
I did a 35% water change and hoped it would go away. However, the next day it reappeared. I was leaving to go out of town to my college for finals, so I did a 90% water change, removed all the gravel, soaked all the decorations and moss in hot water, then scrubbed the tank in the hot water. I swished my plants around in some new spring water I dechlorinated.
I added new gravel to the clean tank, added my plants then added new water back in. I dosed some bacteria as well. I then added my fish and snail back in with some of the old tank water. I reattached my filters and heaters.
The problem was better for about 4 days, until it came back.
I'm unsure how to get rid of it at this point, is there a medication I should dose? I'm worrying if I should come back in town to handle this because my mom is not a great fish babysitter other than for feeding them. I rather take my finals here however, but end of the day my fishes safety comes first.