I am using flourite red the plain 20 dollar bag stuff. If I can get pics I will I saw em for a few seconds, by the time my daughter could get my dad they were hiding again. They do burrow but I did have the ugf
plate in there that left a gap for them and a tube going from under the plate(notched) to the substrate surface.
It is literally 2" long stretched and white, its gills are pink and you can see two pink organs on its underside right behind its gill slits. The only reason I saw it well was the water was dirtier the dirt water.
If I have to tear the tank down again I will to find them but These are BLACK "KUHLI" Loaches, they are not true kuhli loaches they are pangia oblonga's they have been bred in tanks under difficult to none.
I picked up some very smooth pea gravel today I am going to put in my 15g on the 4th(ye dare not touch thy fish tanks on thy wedding anniversary, its the 11th commandment) and transfer what I can catch over there or just go get a dozen or so more and yes UGF
plate in that one with tube again, if it works im gonna go for it, I also got bigger rocks like decent skipping stones I might layer down in there as well, might be easier for them.
Either way its free fish, its the best kinds of fish.