See if this makes sense. I have a main tank that is up and running now for 4+ years. Its a 100 gallon with a 40 gallon sump, 3 fish, 3 shrimp, lots of xenia, polpys of all sorts, 150 lbs of LR
and 100 lbs of LS
I also have running a 30 gallon QT with 1 tang in it with a seeded biowheel from my sump (3 months), softball size peice of LR
, and a baggie (open) of LS
. QT has been up and running since 10/25 and cycled it with a large shrimp from a local deli. Tang in the QT has been in there since 12/11 without incident.
So a few days ago as I normally do I tested for ammonia. (in the previous 3+ weeks with the fish in there) there has been no ammonia. I tested this past weekend and it showed .20. I paniced and did a water change from my main into the QT of like 9 gallons. For kicks after thinking, I tested my main water as well. Test showed .20 as well. So I went a step farther..I tested my RODI
water. Same result. Chalked it up as bad test kit. Went to the fish store and exchanged it as they said the same.
Came home tonight and tested with a new test kit (of the same brand). SAME RESULT!! However the RODI
water shows .60!! Can this be? Heres what weird. I had the same version of test kit left over from a year ago and was testing the QT during the cycle. It showed a spike and then fall and then the tang went in the tank. To me something doesnt seem right. Especially the fact that I have ammonia showing in the main with corals and shrimp and all is well. I have nothing that would produce ammonia?? Ammonia comes from decaying and no bacteria base...so whats the deal? Sorry so lengthy...