The water in the tanks is about 23 degrees the p/h is between 7.5- 8.5 and the ammonia level is 0.5-i.0 that’s close to perfect , however I am expecting a spike in ammonia as the fish age and eat more food, with night time temps getting cooler I don’t expect water temps to be an issue going forward. You can see in this photo that the water has a tannin look about it that’s because I placed dried gum leaves it the water, I believe the eucalyptus in the leaves and branches can help in the fight against bacteria.