I'd test your water and see if anything's spiking. A $30 water testing kit is well worth it if you're possibly having cycling issues. Are there any fish in there? Perhaps they're experiencing aggression and trying to hide at the top. -Laurel On Apr 13, 2009, at 8:23 AM, Shango Los wrote: > Hi All, > > So I noticed my shrimp were huddling at the top of the tank yesterday > morning. I figured that something had spiked and I better do a > water change > quickly. No sweat, did a 50% and the fish who were looking ok to > begin with > were totally stoked. The shrimp still migrated back to the top > though. In > the evening, I did another 50% change. > > Again this morning they are all huddled near the top. All I can > think of is > that something keeps spiking but that is awfully fast for anything > to spike > after those kinds of water changes in a 2 year old heavily planted > tank. > The second possibility is that when I put my logs back in (log!) > they can > get closer to the surface and they are going there just because they > can and > they like it. > > Any ideas? > > Thanks > > Shango > > > _______________________________________________ > GSAS-Member mailing list > GSAS-Member@thekrib.com > http://lists.thekrib.com/mailman/listinfo/gsas-member _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member