I had the same thing happen to me in 2012 (ammonia 1 ppm
, nitrate 5 ppm
out of the tap). At the beginning of 2013 it went to zero/zero.
I had decent bio filtration (Emperor 280 on a 20g tank) but I limited the weekly water changes to 25-30% because of the ammonia in the tap. I was able to keep the ammonia and nitrite at zero each. Once I forgot about the WC
limit and did a 75% change. Later that day I saw 0.5 ppm
ammonia and 0.5 ppm
nitrite the next day. Both went back to zero the following day.
While daily water changes are great for resolving tank water quality issues, it might not be advisable when the source water is worse than to water in the tank. Might need to do RO
and re-mineralize it. Or reduce the weekly WC
%. Purigen may help as it absorbs nitrogenous waste. Zeolite might be another option you could try.
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