Okay first off, my 29 gallon tank with wet/dry filter has been cycled for about 3 weeks now. I slowly introduced fish starting with a pair of false percs and a royal gramma a week and a half later. Additionally I have a few hermit crabs and turbo snails and I also have a decent amount of LR
Background information: I started this tank originally to be freshwater so I had one of those penguin filters with the biowheel early on. I then bought the wet/dry and continued the cycle with 5 damsels and threw the biowheel in the wet/dry below the bioballs. I removed all other filtration (sponges) while the tank was cycling. I did many 25% water changes during the cycle for the benifit of the fish and was able to keep them all healthy and thriving (although it prolonged the cycle a bit).
When the cycle concluded I brought the damsels back to the LFS
, did a pretty large water change and bought a pair of percs. My parameters have been good since then. A week and a half later I added the royal gramma. Everything was fine. Then a week later I did another good size water change (11 gallons) and I cleaned out all of the filters, removed the bio wheel, and got rid of all of the debris laying on the bottom of the filter. That's when it started. The next day I had an ammonia spike on my hands. Where it had been zero for a long while, it now rose to .5. I kept an eye on it but got nervous and added ammo lock to it. I did another partial water change the next day (8 gallons) and I'm still seeing .5 - 1.0 reading for ammonia. My nitrites are 0, nitrates are 5.0 or less and I also noticed today that my pH dropped a bit but I managed to bring that back up to 8.2. This really sucks because one of my clowns is starting to look a bit distressed. I'm on the verge of doing a 50% water change (mixed up new water a few hours ago) but a friend of mine who used to own a LFS
told me that since I didn't touch the bioballs when cleaning, to wait it out and that my cycle should catch up. So what do you think? Should I do the change or just add biozyme, monitor the situation or what? I put the biowheel back in the filter but I'm not sure if this is the problem or not. I'm new at this and just freaked. Are my numbers that bad? Anyone? Thanks...