So one or two of our corals weren't looking happy so we decided to test the water. And everything looked fine except the ammonia. Ive been having a hard time figuring out why the ammonia in our tank showed up suddenly. Its always been 0 since our first cycle. Its a 72 gallon with a 20 gallon sump and 120+lbs of live rock. We have 2 small clown fish, a blenny, a coral beauty, 3 chrommies and a bubble anemone and a carpet anemone. We did a 15 gallon water change 2 days ago and tested the water yesterday and the ammonia was still high. So I looked for anything dead in the tank. Took out a zoa frag that never opened since we got it and looked like it was melting. Also cleaned out the overflow. Didnt find anything dead in the tank or sump. So today I did another water change of 20 gallons. And here are the results a few after hours after:
Ph 8.2-8.4
Temp 79
Salinity 1.025
Nitrate 0-5
nitrite 0
P04 0
Ammonia .5
I think its from our salt. We just changed salts the water change before. What should I do? Everything else looks happy except for one zoa frag.
From left to right. 1.Water from tank 2.Ro/di water with salt 3. Ro/di water