Last fall I purchased a dozen SPS frags at a swap meet. I started testing Alk daily to baseline consumption afterwards. I stabilized the dosing quickly in a couple days. I then needed to moved some Acans on the tank bottom and after doing so (bare handed) I noticed Alk consumption decreased/halted. After a couple days the tank stabilized. A week had passed and needed to move the Acans again (bare bottom and strong willed snails) and again, Alk consumption decreased/halted. That’s when I made the connection. So to prove my theory, I put on the neoprene glove and put my hand in the tank, cleaning detritus, cleaning glass, adjusting the Acans again. I tested this over three days and never saw an upset in Alk consumption. Since that day, I wear the glove every time.