u/BitcoinHurtTooth4

I got this tree about 6 months ago. It instantly lost all its leaves on the repot. I also got 7 other caviar lime trees of different varieties. All the others are in the same conditions and growing well although not holding fruit. They are young trees. This one and the dead one next to it immediately lost all their leaves, panic bloomed and have never grown anything besides tiny blooms. The PH is a little high at 7 which I am trying to get down. They are in cactus and palm miracle grow with 25% perlite and 25% peat moss. Any recommendations welcome. We are in Texas. My theory is that my water is too basic.