i have a 55 gal tank with 5 very young marco rosenbergi prawns and 4 snails i do not know there name well i noticed after i got some drift wood from a lfs i have hydras all over how can i get rid of these guys with out trying to catch and move my prawns ? in time will the snaills do the job ? or should i maybe get big apple snails ? the prawns look and act like thee not even there thx for any help i was thinking if i cleans the glass and such whould a uv sterlizer help or maybe take the wood out and boil it in hot water ?

