I've always kept kuhlis in gravel...they don't seem to mind, as long as they can borruw. Mine also like to hide under plants, rocks, and drift wood...Just get 5 or more...they are social, but it's cute to lift up their favorite cave and see them all piled up against eachother in a giant ball...lol then they panic and go everywhere in the tank in a mad craze
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I think about you in the summertime
And all the good times we had, baby
It’s been a few years and I can’t deny
The thought of you still makes me crazy
I think about you in the summertime
Summertime - New Kids On The Block