ONOZ!!!

Not a HOB

(Yer always right...where did that come from

)
Here is my story: I had two pbass in a 75g as their second grow out tank. It has a
Emporer 400 and two large sponge filters (sound familliar Rally?

) There were no problems while they were small but when they hit around the seven inch mark, they started overloading the filters. I also have apple snails in there, and they are my water quality alert system. Several weeks ago they started floating, but would drop back down after a few hours. The first time I saw it, I was in a rush to leave town overnight. The following day they were normal and a quick ammonia test showed nothing. The second time it happened, I took a water sample and the ammonia had shot up to 4ppm!!! This was the first time I had ever seen ammonia over 1ppm and was shocked. I did a 90% water change and cut way back on their food for several days (I recently switched them from feeders to shrimp). The day after their next big feeding, it happened again. I don't know if they were constipated or just happened to let it all loose at the same time, but they were clearly exceding the carrying capacity of the filters. I moved them to my 250g and the wet/dry didn't even flinch.
I initially thought that the filters had gone sterile and were cycling again

, but they were healthy enough to consume huge amounts of ammonia in about a day (I presume the first time was also around 4ppm of ammonia). Moral of the story: never underestimate the gut of an over fed pbass