KatJac

I did like nabookovfan87 suggested and all is well! The filter slime is gone, the plant fuzz is gone, and my water is sparkling! Thanks

Thanks. I'll do that. I'll post back if it still there in a month.

No, its city water. I'm at a loss as well. At least the fish I do have seem to be doing well, but I would like to eventually add more fish without killing them. The fish I added that died were guppies, not the most sensitive fish!

I'm running an Aqueon 20 and a China rip off Aquaclear 30. The "Aquaclear" went straight from tank 1 to tank 2 with all its media without being shut down or cleaned. I rinse the media from 1 filter each week in tank water, alternating the filters each week. The bucket of water gets very slimy and thick with tan sludge. I should also mention that for awhile I had a foamy water surface. That seems to have gone away now.

looks similar. pH 8.2, ammonia .2, Nitrite 0, Nitrate 2.5. The numbers have been this way for a few months. My test kit doesn't expire till 24.

Around Thanksgiving, I moved my 10 gallon planted shell dweller tank to a 28 gallon with a new substrate - I think CaribSea Aragonite. I moved my old filter over and added another, in addition to the old shells and plants. It crashed. I had probably a colony of 50ish that was dying left and right. It was one the weekend and I was working so much that I couldn’t do much. I had a huge ammonia spike I’m assuming. As soon as I was able, Monday, I did a water change and checked the numbers. The ammonia was about .5. I lost alll but 5 very young Multis. So here I am, 6 months later, dealing with a white fussy slimy stuff in my filter and on my plants. My 2 guppies and 5 Multis are good, but if I add another fish, it dies. I'm vacuuming 1 to 2 times a week. Any ideas or suggestions? Here’s a pic: