Does a sponge filter lose a significant amount of BB after a water change?

  • We are currently upgrading MFK. thanks! -neo

Death03

Jack Dempsey
MFK Member
Feb 1, 2014
296
17
33
Philippines
Hey guys, I'll be setting up two 30 gallon growout tanks and I've been thinking if I can get away with just getting a sponge filter for each of them.

My biggest concern is when I do a water change I usually put the dechlorinator directly to the tank then run my tap water directly into the tank as well. I've been doing this for a long time and I've never been into trouble, though I'm really confident doing this because all of my tanks right now has external filters so I know the BB would not be affected.

But right now I would be running sponge filters exclusively for both tanks since they're kinda small so I'm concerned if my water change style would affect the BB in the sponges.

I know I'm kinda over thinking this one but I guess it's better to be safe than sorry.

Thanks for anyone that could help!
 
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