So my 20 gallon cube has been unstable since i got it. I get my water from a shop because my dad thinks its a waste of space and time to have a full salt mixing unit. My alk is always unread on my sailfert dosing kit. (is there a hanna for this?) I want to do an acropora tank but my parameters are constantly unstable. My chiller wasn't pumping for five days? so my tank was about 31C for very long. When i fixed it, my stylo started bleaching, my recovering montipora started detiorating again. How do i get my tank on its feet? My dad also doesnt allow me to change my filter sock twice a week, so when i change it, the tank parameters go all crazy. Can i get some help?