in my rsm i had a 3 inch sb and never had any issues of any kind. what i did have was people telling me my CUC was too big. however after about 6 monthes none of the CUC had died of starvation and people had begun to compliment the cleanlyness of my SB. my 33g RSM contained 6 turbo snails 12 marg snails 3 dovetail snails and 2 sandsifting stars. as well as about 15 hermits of varying size.
Now i did overfeeed on occasion just too be sure they were getting some food, but i almost never had any visable poo in my tank. also during water changes i almost never attempted to remove more than water.
As far as filtration goes i am unaware if this is enough sand, but i never had any spikes of any kind.
Just my 2 pennies.
Edit. i do however find my bb temp tank to need more maintanece then a tank with SB. between the turkey basting and water chages.
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72 Gallon Bowfront Reef.. Hardware:2x250w Luminex Elite HQI Reflectors (Phoenix Hexarc Bulbs), Galaxy 2x250w Electronic ballast, Euroreef 130 Skimmer, Sedra KSP 7000 Retern... Live Stock: Pair of Hawaiian Flame Wrasse, Leopard Wrasse, Pink Streaked Wrasse, Pair True Percula Clowns, Potters Angel, African Flameback Angel, Orange Fin Tomini Tang, Yellow Assessor, Tailspot Blenny, Purple Firefish..
45 G FW Asain Barb Community tank.
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