My S and S+ grade CRS grow & breed like rabbits in my Fluval Spec V (with an added LED light to encorage algae growth.... my CRS's graze it as fast as I can grow it !!)
The adults thrived just fine in my 26 gallon 10 year running over-stocked with 50 Tetras tank before moving them all into the Fluval for breeding
- I mix 1/2 tap water with 1/2 RO/DI water for 25% water changes twice a week.
- I feed mostly Tetrafin Plus Goldfish flakes
every other day (the Plus flakes have extra algae & color enhancers), a few small pieces of IAL laying around, and a tiny piece of Mosura CRS & Excel once a week for s@&ts & giggles' (Mosura pieces always feed in a small glass food-dish' which is buried even with substrate, NEVER just placed on the substrate itself)
- I add 15 drops of Kent Pro-Plant twice a week for the Moss & Crypts'
That's about it.... easy-cheesy-japaneasy
And the fact they are NOT shy/skittish is just an extra bonus
MY BEST ADVICE IMHO.... CRS ARE ONLY TRUELY HARDY' & HAPPY IN A LONG-RUNNING ESTABLISHED TANK !!
(with lots of invisable micro fauna in the substrate & algae covered back wall of tank/other places to graze on)
20g long with... (4) 30" T5HO Colormax/6700K - CO2 @30ppm - Fluorite black sand - Canister w/Purigen - EI dosing & Osmocote Plus - RO/DI filter (Plants & FRS)
My 180gallon SPS reef tank had 2,160 Watts of light waaaay back in the early 1990's... (3) 400 Watt German-10K Metal Halides and (6) 6' 160 Watt VHO RS/03 (3 IceCap 660 ballasts)