Thank you for the quick response...most appreciated.
More facts. I have a Milwaukee DO meter. I measure regularly. It reads 7 now. When I had anearobic sludge on the bottom, it read 5.5. The water temp has been 68-72F. I do not have a nitrate testkit; I will buy one tomorrow. I did a cycle on my tank with ammonia. Starting at 6ppm, it took 5 weeks in April to get to 0.0ppm. The nitrite went to 5ppm after the ammonia started dropping. The nitrite now reads 0.1ppm or less (0.1 is smallest the test kit measures.
I will start reading the references you have provided. Your help is greatly appreciated.
After the waste started building up on the bottom, I installed an old pool sand filter and did three vacuumings of the bottom to waste. The water looks good now, but was full of particles a week ago for about 6 days until I could get the sand filter installed. I have zeolite in the sand filter.
Any other ideas will also be appreciated.
Thanks again.
Doug
