After moving to the seaside, I was sure that I wanted to have a native marine aquarium but I was not too sure about what set-up to buy. I have quite a bit of experience with tropical fresh water aquariums but marine tanks always seemed to be much more difficult with sumps and skimmers and all that. However, nowadays everyone can start the hobby with a of ‘plug-and-play’ aquarium. After a bit of online research, I decided to go for a Red Sea Max 130D. At 130 liters it is a medium-sized tank, although I guess it is still often classified as a ‘nano’ tank.
All equipment is hidden in a compartment at the back behind black-tinted glass:
Water flows into the back compartment through a sieve, this sieve cannot be removed for cleaning which is unfortunate as it easily gets clogged, especially when you have lots of seaweeds in the tank (I do not use the extra comb (1) because I did not find it very effective and it takes up too much space). Water then flows through a filter pad (2) into the skimmer compartment (3). The stock RSM skimmer is very noisy and I only use it at night. I find that the skimmer cup is not very easy to clean either. There is an empty compartment (4, 5) for a chiller pump that I hope to fill up soon (of course I do not use the heating element (6)). Water flows then through ceramic (7)- and carbon (8) filter material before two pumps jet the water back into the main tank compartment again (9). This design is quite bad, as the filter material can only be accessed after removing the pumps and the bags are stuck in a narrow compartment. I also use a bag with RowaPhos to remove phosphates to keep algae in check.
So filtration, skimming and design could have been designed better (as well as lighting, see a previous post) and it is perhaps no surprise that internet forums abound with descriptions of RSM tank modifications and additions (e.g. this media bag and skimmer replacement option). Although I am overall happy with my Red Sea Max tank, if I would by an aquarium today I probably would assemble it from separately ordered parts.