Long story short my new system had cycled about 3- 4 weeks ago Ammonia, nitrite, and nitrate were at 0. I added a a few snails and hermit crabs, a lawnmower blenny and a diamond goby and everything was still okay. a couple weeks later I added 20 more snails 10 more hermit crabs and two clowns. ever since my peramiters have gone crazy. Today I tested and they are: Ammonia= 0.75 Nitrite= 0.1 Nitrate=0 PH=8.3 Alk=2.6 my system is as follows: 65 gal wet dry filtration, 2"-3"sandbed, 70+ pounds of live rock two power heads. I did a 15% water change five days ago and it has only continued to decline. I am a newbie so any advice wil be good advice to me.