ammonia spiked, trates and trites when't up, then came back down. Yesterday morning I tested everything and they all were zero's with ph about 8.0.. So today I checked again and same thing. So tonight when I got off work, I grabbed a emerald crab and a few snails. I know its just a crab, but man after looking at this empty box of water for a month now, a crab is fascinating stuff lol. Man he is loving the smorgasbord of algeas I have accumulated. I thought he might hide when I put him in, but he went straight to work, no hesitation.