sand bed

Specs 10 gal 9 neons (healthy) 1 Juli cory (healthy??) black sand blasting sand (very fine) Ph 7.4 Ammonia 0 nitrite 0 nitrate 10ppm Ive gone through 4 juli corys now. I don't know what to do? They usually die the day after I get them are eating and acting normal just a few hours before there...

What's the best way to sift sand in a brackish tank? I know there are lots of potential sand sifters out there for marine aquariums, but there aren't a ton for a low-end brackish tank. I don't want any dead spots in the substrate, so is there any way to manually sift the sand? If not, what are...