Hi, yeah I agree with digitalis as far as the jewel filters go, as long as your sensible with stocking which really goes for any tank then it should be fine. Ive yet to find another internal to match them.
Never tried it myself but according to PFK's treatment finder tool the Interpet is safe with shrimp. You can find it on their website under 'Tools' if you want to check it out for yourself, it also gives the email address to interpet if you wanted to double check.
Sorry I havent been around much lately but the baby seems to take up all my time at the moment, not that im complaining but Im still here in spirit and often look in just don't always get time to post - Anyway best wishes for 2007 all