I posted last week about trying to treat my betta's fin rot
, and I mentioned something strange.
I've noticed that my heater seems to be causing a weird, whitish film in the water. Whenever the heater is in there, after a day or so, weird white particles can be seen floating around in the water, and if not immediately changed, they can grow to be about the size of a penny. I'm guessing this is some sort of algae/bacteria? Either way, my betta definitely isn't responding well to it. He's much less active, he clamps his fins back, he doesn't eat as much.
I'm away for the weekend, but as a science project I put the heater in a separate vase to see if the whitish film comes back there too.
If there is a problem with the heater causing the film, is there anything I can do? Should I put an antibiotic in the water? Buy a new heater? My house is usually ~71 in the winter, so of course I don't want the betta's water unheated any longer than the short-term.