Hi Everyone,
I am in the process of cycling my first system. I have been doing readings with an API kit everyday for 10 days now and I have
ph 8.2
amm. 3.0ppm
nitrite 0
nitrate 0
(My 75 gallon tank is on a constant flow to two half barrels, water temp 76, and I have a whisper 300 blowing bubbles. I added stress zyme to help initiate bacteria growth. I should add that I have six small tilapia in the tank.)

The ph has been like this since day 1 and I was wondering if adding spagmum peat moss is the best organic way to lower it.
I have been changing about 6 gallons of water every day and stopped feeding the fish for 2 days but the ammonia level is still very high. Any thoughts about this?

Any suggestions of how I might lower the ph and ammonia, and get the nitrates up?