O.K., I don't know who has the Monster Fish Keepers name on YouTube but thank you for your past interest in my videos. I now have 4 butterfly Peacock Bass that I brought a buddy and he has them in a 54 gallon corner aquarium. He has been having to do 1/3 water change outs every week to deal with PH. The smallest fish is about 5 inches and the largest about 8. I have the ability to obtain a 200 gallon 2' X 2' X 7' aquarium, lid and stand and will be doing so to set up and split the fish up. If I bring the two largest to the 200 gallon tank, will that help my friend with the two smallest in the 54 gallon aquarium? And any information you might share for ideal ph would be great.