Hi all, some advice please. I am having a lot of problems introducing Turbo's to my system. I drip and temperature acclimatise them before introducing them to my tank but find that they close up (not completely) and do not move after I have dropped them in. Some attach (pretty half heartedly though) to either the LR or the glass but that is it. They then die. I have tried feeding them with norrie and there is also plenty of algae on the back glass. I do have other snails in my tank that I have collected and they are fine. What am I doing wrong?