The pic is of a RSM 130, not 130D. The 130D has a "viewing window' for water level on the left side of the sump in the return chamber area. Also the "D" has a surface skimmer basket vs the 130 that only hase the grate. Not a substantial difference, but if you want the basket, contact Red Sea and they will send you the upgrade kit for $30.
Very nice tank. I have the same one, but have now starting picking up parts and planning a larger tank. This hobby is very addicting, been in for 9 months and already upgrading my tank!
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