This is just what i was looking for. i think i'm going to go for the sponge option on the whisper filter i have, although oddly my fish seems to quite enjoy slight water flow. When i change out say 1/3 of the water he always come up and plays in the water trickle when i add new water. I think i'll still baffle the filter though just in case.
I know this was originally posted in 2009, but still want to say thanks! I was able to create one in no time and I also want to share something that happened as a direct result of using this that people might find helpful.
I made mine for a Decco Art Nano filter (on a modified Mini Bow 2.5 gallon tank) and it worked great. I had just switched from keeping my betta in a bowl to a filtered tank and the water flow seemed like it was too strong, even turned all the way down, especially since my guy is kinda little.
A few days after installing the baffle, I was looking in the tank and couldn't find my betta, Coco. Then I saw him, IN THE BAFFLE. He was using it like a hammock!!! It kinda freaked me out, I thought he might be stuck in there, or worse, that he had drowned. I pushed down on the baffle and he just swam out, like nothing happened.
I decided to remove the baffle after that because, obviously, he wasn't bothered by the flow of the waterfall. Maybe it was like a massaging shower head for him or something since he now likes to swim into the waterfall. But I didn't want to take any chances, so I removed it.
So, the baffle is easy to make and works like a charm. Just be aware that your betta might decide to take a nap in it!
"So, the baffle is easy to make and works like a charm. Just be aware that your betta might decide to take a nap in it!"
YUP - that is why I always recommend an aquarium sponge/foam baffle. ESPECIALLY reading about one of our posters here losing her curious betta when he swam into the water bottle, but couldn't get out. Poor thing drowned.
Here is a pic of one of my tanks with an aquarium sponge used as a baffle. MUCH safer than the plastic bottle baffle, IMO.
Not only is the sponge/foam baffle safer, but it gives the "good" bacteria another place to grow! AND it's easy to control how much flow you want - pull it up for more flow & down for less.