IS THIS NORMAL? THEY ARE DIGGING UP SAND EVERYWHERE. I AM CYCLING MY TANK WITH 4 YELLOW-TAILED DAMSELS. I HAVE A 55G SW TANK. CAN ANYONE HELP ON THIS MATTER?
YEP! Mine does the same. It fans it with it's tail. It has piles all over the place. It has caused some LR cave in's in the past so be careful if you have your LR stacked.
Yeah, salt does not evaporate so you don't want to add it to replace evaporated water. Just try not to ever let your water lever get too low as salanity will increase.
The damsels don't dig to escape ammonia, the dig to make themselves areas to sleep. If you watch your damsels after you turn out the lights in the tank and room (they need to think their alone) you'll see them do this. they "dig" alittle hole using the fan method with their tail and then "sit" and there and "sleep". Mine do it all the time and my levels are all 0.
My little damsel fans the sand too, drives me crazy. Sand dunes all over the place. He seems to be perfectly healthy and happy, I've had him for about four months.
Liz
I have studdied my deamsel and when he does it, I think is to lift up derbiss or little fine critter or anything nutrient for him to eat that is on the sand bed, and also to sleep!... I guess this is O.K. since you need some sand movement in your tank...