Sand And Kuhli's

[Cocomojo]

Topped off my stocking this weeked in my 20 gallon and put my Kuhli number to 6.

Apparantly they all got so excited to see each other, they throw a party every night.

Before lights out the water starts to look a bit clear and sand has settled on EVERYTHING.
Then come morning time.. once again the sand is floating all over the place. Other than going back to a more gravel substrate... is there any suggestions on what I could do? Figure could pick up a second filter and just run it with floss, but don't really care to spend the extra money.

 

[Forestpisces]

To me your kuhlis sound normal, they do like to hunt about but they shouldnt be causing that much sand disturbance.

I think there may be other fish involved

 

[Cocomojo]

I have 6 Kuhli, 7 Fancy Guppy, and 3 young Double Red Apisto (1m 2f)

I figure it be the Kuhli since during the day they're more active than I've ever seen when I had just 3.