Originally Posted by kfryman
Was there water in the sand when you got it? And just saying live carribean sand sounds like it is indeed for salt water... Which means there is salt in it... Auchan means it gets into the water. Only way to get rid of it is take the tank down. You don't want any of it in your tank. Especially with live plants!
Sand seemed to have some moisture in it. I agree with you that it was marine sand. Stupid me, I ASSumed it would still be ok for a freshwater tank, and the package didn't say otherwise.
I just spent the past 2 hours or so sifting my plant substrate bits out of this milky white sand, after draining most of the tank water. Once I'd cleaned out all substrate and water I put the sifted plant substrate back, along with a fresh bag I bought today, and refilled the tank. So for now I'm going with 100% Fluval Stratum freshwater (I checked) plant substrate, it's basically little granules of black soil.
I went to two different pet shops looking for freshwater sand. One young guy told me they don't have freshwater sand because nobody would want it. I replied that nobody knows enough to want it, and tried to explain about cory and other catfish barbels but was met with a blank stare. He said they also carry small, smooth pebbles; I agreed those might work, but then he told me they are out of them and he doesn't know when they will get them. I was too tired to get mad.
Anyway, I did end up bringing home some more plants, a skull ornament, a hunk of driftwood, and a gravel vacuum long enough for this arm-deep tank. So the trip wasn't totally wasted.
Now waiting again for the water to clear enough so I can actually plant these poor plants!