Hello everyone I'm new to the forum and new to fish keeping. My husband was recently bitten bye the betta bug thanks to his co workers and we now have a few bettas in individual bowls around the house. As is so often the case, I have become the bettas' primary caretakers. However I'm new to bettas and I've never started a tank from scratch before, so I'll have several questions I'm sure. After some persistence I was able to convince him to do away with the bowls and get a real tank for them. We got an AWESOME deal on a 14 gallon tank kit (tank, hood with light, power filter and heater for only $40) and we're looking to divide it for the bettas. I've already read the posts regarding how to divide the tank and I look forward to starting that DIY project next week or so. But to the point! My question is in regards to the power filter. I'm aware that bettas are not fond of strong currents and the filter (an Aqueon 10) does not come with flow control. I've read you can tie a sponge around the inflow part to reduce the flow but my question is what sponge to use and how much of the inflow tube do I need to cover? Do I place the sponge so that ALL the vents on the inflow tube are covered or will that slow it too much and damage the filter? Also what sort of sponge do I use? I was thinking of using the AZOO Oxygen Plus BioFilter 9. It's the kind of sponge you would use for a sponge filter and I found a site where I can get just the replacement sponge for only 99 cents plus the cost of shipping. I'm not concerned about shipping costs as I plan on getting more than enough stuff from that site to make up for the $6 shipping fee. However, none of the fish shops in my area carry sponge filters so I'm not sure what they look like or how dense they are, I'm basically looking at a picture on a website but it looks like it might work. I was going to use a plastic zip tie to hold it on. If any of you are familiar with these sponges I would like to know if it would be suitable or if some other type would be better.