Pond Boss Forums INTRO Questions & Observations Pond problems

Several thoughts here. First, when was the last time you bought chemicals for your nitrite test kit? I suspect your reagents have aged beyond their usefulness.
Secondly, as long as you have at least 4 ppm oxygen each morning, your pond should continue to show signs of improving, with aeration running 24/7. Keep the aerators going. Muddy water isn't necessarily an indicator of low oxygen or increased nitrites. But, as much fresh water as you received, you probably lost buffering capacity. Send a water sample to the soil sciences lab at Texas A&M, form available from your county agent. If your water needs a chemical adjustment, a water analysis will tell the tale. Do a "standard water well" test. Costs $20. If alkalinity is below 20 ppm and pH is below 6.5, consider liming, using calcium carbonate. If pH is higher than 6.5, and alkalinity is higher than 20 ppm, hang in there, good things are happening.