Thanks Loc,
I am keeping this batch at 82 and I have changed up how I prep the water. I was using mostly RO water with a little tap water to bring the TDS (Total Dissolved Solids) up to 30 ppm (you can measure TDS with a TDS meter). Today I am using 100% RO water and bring the TDS up to about 100 using RO Right and adding Discus Essentials for additional minerals. Prepping the water this way allows the ph to slowly drift down to about 5.5 (best to have a ph moniter is you can keep an eye on it). The minerals in the water help to support fin growth since these guys grow so fast in the first year. IAL are Indian Almond Leaves and I add that to the water when I first receive the altums to help them recover from shipping and acclimate to tank life.
hth
Pat