i was wondering if it would be worth it for me to get a shrimpery. i have a pair of kribs, a pair of angels, 5 gold barbs, 1 bn pleco and a redtail shark in a 55 gallon, and in my 20 tall i have a pair of mollies, 3 black skirt tetras, 5 zebras, 2 cory's and a dwarf gourami. i was just wondering how effective shrimpery's are and if itd be worth it.