Congratulations on your new tank! How exciting! Assuming you are going to do a freshwater tank, you would want a filter for up to 100 gallons. Or some people use two filters, one at each end of the tank, to provide all the filtration they need. You have several options. You could use for example, two of the Whisper 60 filters or two Whisper EX 70 filters. Another option would be to use a canister filter. Our other division, Marineland, makes an awesome canister called the C-360. This powerhouse has four huge trays filled with coarse sponges, carbon packs, bioballs, ceramic rings, and a polishing cloth. It would be all that your tank would need to keep it clean.
Lighting has really evolved over the past few years, so we highly recommend LED lighting. It gives a more natural look to the tank, puts off virtually no heat, is energy efficient, and you never have to replace a light bulb.
With a tank as large as a 75 gallon, you have many options. You could design a biotope tank for example. This would be where you pick certain species of fish from one part of the world and build the tank to represent their most natural environment. One of my favorites is a South American Amazon River biotope. This contains natural gravel, real driftwood, live plants such as amazon swordplants, java fern, brazilian sword, etc, and schools of rummy nosed tetras, neon tetras, other tetras, various corydoras catfish, dwarf ram cichlids, and either angelfish or discus as the showpiece. If you opted for discus, they are the kings of the tropical freshwater fish world and require certain parameters, and very large, very frequent water changes. They are well worth it though. Order them through companies such as Mac's Discus or Rocky Mountain Discus, online, for the best fish. A simpler, less expensive South American fish would be the classic angelfish. These are very impressive and make a nice centerpiece in a South American biotope.
If you prefer more aggressive, larger fish, we would then recommend a pair of oscars, and perhaps a shovelnosed catfish. Or a green terror, texas cichlid, midas cichlid. There are many wonderful cichlid combinations. You could build a rocky environment for African cichlids such as labeotropheus, zebras, johannis, etc.
We have probably just given you enough information to whet your appetite. If you would like to ask specific questions, please call our experts at 1-800-526-0650. They will be happy to help you.
answered 2 years, 11 months ago
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