Lissaspence;4026977; said:
I will check the sticky. and I just PM'ed lupin. Interesting thoughts on the nitrogen bubbles. Do they make a tester or something I can check with?
My water is airated to the max! Two of the giant dual air pumps tetra 300's. 2 fx5's blasting the surface and a big ehiem also. and 7 feet of airator tubing
If the returns of the fx 5 are above water then there's no problem with nitrogen gas. A pressure of about 0.5 bar or 5 metres of water head from a pump sucking air are usually necessary to cause the disease. A spraybar will eliminate the risk however. When you can see bubbles under the skin of the fish this is when you have a problem. You can see this effect best on the fins.
If the return of the fx5 is under water and still shooting out microbubbles you may have a problem. you may not see clinical signs on the fish but discomfort due to too much nitrogen in the blood may lower the immune system of the fish. Your aeration measures will minimise any possible problems in this direction.
You can test the nitrogen content of the water but a standard test kit doesn't exist to my knowledge. Usually nitrogen in water is measured with an electronic probe. I don't believe that nitrogen is your primary problem however as you would also see bubbles on the fins and not just on the whiskers.
I think a virus or parasite is a more likely cause. I have seen the lumps your talking about on two featherfin catfish I used to own. Both developed the problem around 12-15cm in length and ended up growing to about 25cm long. I never had cause to worry about health issues of the two however. I'll try and dig up a photo of them.
j<><