Hey guys, So I finally changed my substarte overr from gravel to argonite sand yesterday. The water is still slightly cloudy, which I expected it would be for a day, but, my powerhead seems to kick up the sand no matter where I aim it which is causing the cloud and I now have a million little microbubbles in there all the time that wasn't there with the gravel. I am assuming its just trapped air in the sand, but, is it normal to have constant bubbles 24 hours later? Thanks guys! I have to say you have all been a great help. I feel like i am going in the right direction with my tank. Oh also, I hope to add some more cleaner crew in the next day or so. Either a cleaner shrimp, 5 more astrea snails (3 of my previous ones fell onto their back behind rocks without my noticing.(How DO they survive in the ocean?) or maybe a larger snail...Queen conch? Don't know much about those yet though...any info appreciated! Thanks all!!