I would urge you to take a good size sample of your top off water and tank water to the
LFS and have them run the "standard" tests. The kits you are using may be faulty or inaccurate. This may help shed some light on matters as well as some tests you may not have on hand.
I took a water sample to the
LFS a few days ago, and here were the results:
Nitrates: 10-15
Nitrites: 0.1 (which my test agrees with, but I didn't previously know for reasons stated above)
Ammonia: 0
PH: 8.2
Any other tests they charge for. According to my DkH test, it's 12.
You are missing some of the basics here and I am also wondering if there is an ammonia source. I still strongly suspect llow water flow which will in turn mean improper pH and low
O2.
What would be a source of ammonia? I don't have any fish in the tank as of about 18 hours ago, I haven't fed as of about 60 hours ago, and all that's in my tank is inverts, a few corals, rock, sand, and water. Shouldn't the bacteria have been able to knock out that 0.1 nitrite level by now considering it's had a steady 2-3 fish load on fish it for about three weeks?
This
IME, is moving a little too quickly and may have possibley overloaded the bio filter and not allowed the bacteria to keep up.
These were all added over a period of two months. For the vast majority of that time there were 2-3 fish in there. I tried to keep the load on the tank a constant so it would level out and stay that way.
After reading the entire thread over again, I could not find mention of anything that would allow for the proper dentrification process save a skimmer. No mention of sustrate type/depth or
LR and amount. I am leaning towrds not enough.
I'm sorry about that. I can't seem to keep track of which threads I list this in and which ones I haven't yet. I have the following in/on my tank:
2" sand bed (about 50 pounds worth, 0.7-1.3mm according to the bags)
15-20 pounds of rock
CPR Backpack 2 filter
UV Sterilizer w/ 100gph pump
I may be a complete newbie at this, but even I know this is enough filtration to keep up with 3 inches of fish in the tank. So, there's either a problem with the bacteria population or a huge, unknown source of ammonia. Any ideas on either of those, or a third possibility?
Oh, I also noticed the only thing in the QT moving water is the sponge filter. You really should add a small
PH to allow suface aggitation and help with higher
O2 levels.
Yeah, I put my last spare
PH in there. It's 100gph, but slowed to about half that. The blenny is dead now, and the chromis is still respirating fast. I put some copper in the tank and decided to wait a while before adding some more (because it's only at 0.10ppm so far), but at this point I just think there's no way to save the chromis. Nor do I think it's a terribly worthwhile venture. He's doing exactly what the other 20 fish did before they died. He shows no signs of disease of any kind. Would you agree that it would be a waste of copper since (if and when he dies) I'm just going to take the QT tank down, mix new water, add a cycle fish, and keep it going after that for new fish?
By the way, I really really appreciate everyone's help. I'm a little frustrated, so if I sound upset, it's because I am. If I'm rude, I apologise in advance, and please point it out. I try to keep my frustration under control at lease while writing posts.