so i am a beginner to saltwater and have a 5 gallon i am converting to salt. Planned stock is a pair or two of dwarf seahorses. i am planning on buying 4 Stage Value RO/DI System - Bulk Reef Supply for my RO/DI water, looking for recommendations on the following equipment: a proper light, a sponge filter, a reliable and relatively inexpensive source to buy BBS eggs from, a good BBS hatchery (NOT DIY!!!), as well as sand and what type of macroalgae. would it be possible to get 2-3 sponge filters and not do quite so insane water changes (50-75% every other day to every day)? also, i know that corals tend to be a no because of some pest i already forgot the name of. but if i bought a gorgonian and used a coral dip might that work? also, if so any recommendations on a coral dip? i plan on having 2 alternated hatcheries incase i get too low of a yield one day. anything i'm forgetting? also, i look to get these down the road (like in 3-4 years). Any good suggestions for inverts or even fish for me to "practice" with before i get my seahorses? also, does anyone have any experience with seahorses (hopefully dwarf, but any first-hand info with seahorses is welcome). also, i read on one website BBS are too large for consumption after 2 days, and another said that it is fine to feed adult brine shrimp. which is correct?