Whats the breakdown of the cost? I dont really know but shrimp is pretty expensive
so it adds up. Not to mention the twice a week water change and dechlorinator.
wow $30 per week you could feed sea world on that money
i buy a bag of frozen peeled prawn for $4 that will last 2 weeks a bag of frozen mussel $4 and a few packs of frozen blood worm for the rays to graze on
so $15 will last 2 weeks
so $7 per week for me to feed 3 rays twice per day