I know you know your stuff but I have had two Kelber I in the 16 inch range that could easily have gotten bigger. 180 is a stretch for all
Peacocks imo
Id stay away from prazipro or any other chemicals. Peacocks are extremely sensitive to anything not water. I use prime and aquarium salt ONLY. Will never use any other chemicals its just not worth it. Just my 2 cents
I have had the pleizona over a year. All the others within the last 6 months. The azul I got as a baby, sold it and got it back from the same buyer as a 2 lb monster.
7 feet isnt the problem. You need 36 inches wide to house most cichla for life. I havent seen very many aquarium peacock bass get anywhere close to 30 inches