120 Gallon Aquarium

120 Gallon Aquarium – 5 Best 120 Gallon Fish Tank

Hey, my dear friends if you are looking for a 120 Gallon Aquarium then here you can get to know about the 5 Best 120 Gallon Fish Tank. Here I have chosen the 5 best products very wisely. It should be well checked before buying anything. So here I want to give you some selected product information.

Every day a lot of people trying to find a Fish Aquarium that has a 120-gallon water capacity but most people couldn’t successfully find out it. So, that is why here I’m sharing this list that will help you to make a decision.

5 Best AquariumFish Tank

120 Gallon Aquarium
120 Gallon Aquarium

If you are looking for a 120 Gallon Aquarium? I think 120 gallons is a very big size and you may not get it online. But there is some alternative option for it. So, here I am giving the 5 best alternative ways.


Check On Amazon 

50 Gallon Aquarium 46 Gallon Aquarium 40 Gallon Aquarium 30 Gallon Aquarium 20 Gallon Aquarium


Product Review:

Let me start by saying this was bought to be my first saltwater reef tank. I didn’t know much about tanks when I started. It seemed a really good deal since it appeared to be a one-and-done purchase. I have learned a lot in the last year. This review will go over the pros and cons of the tank. As well as my experience with it.

SeaClear System II Acrylic Aquarium 

120 Gallon Aquarium

Pros & Cons

  • 1. Easy to set up.
  • 2. Stand made for this size aquarium is easy to find and buy from amazon.
  • 3. Low evaporation 1-1.5 Gallon per week so long as back covers used, if not it skyrockets to 3-4.5 gallons.
  • 4. Lightweight before filled.
  • 5. Very good clarity, at least initially.
  • 6. Will keep fish and corals alive
  • 1. Skimmer: You need to buy a skimmer. $60 for the one designed for this tank, +$40 for a high-power air pump to power it, +$10 good size wood airstone every 2 months (no ceramic won’t work). Finding it is hard, but I found it for sale at Petco, online only. Alternatively, you can get a HOB filter. It took me 3 attempts to find one that fits, but the downside is to use it you need to remove the covers on the back and that makes evaporation more than double. After much messing around I decided the best skimmer was just the one made for it, despite its low capacity.

  • 2. Pump: The pump is literally the cheapest possible piece of equipment they could find. A Rio pump that is 420g per hour supposedly, but in reality, it pushes just under 360 in real-world use. I tested it on a 30gallon bucket to see what it really did. If you want saltwater, you need a 600g-750g rated pump for this tank. like the one I just bought “Sicce Syncra 3.0 Aquarium Pump, 714gph”. It worked for a time, but it definitely is not strong enough compared to a better pump. Also, You will need to use a coarse substrate with this tank and pump even the weak one it comes with. The manifold return is awesome, BUT it blows fine sand around like crazy since it goes to the lower area of the tank. Use a heavier calcium carbonate substrate.

  • 3. Acrylic: The tank itself scratches easier than other acrylic tanks. From my experience acrylic tanks come in 3 levels of hardness, Soft medium, and hard. This tank is medium or soft. There are better acrylic tanks out there, that do not scratch as easily. I know because I went to a custom shop to window shop a few months ago, and they had a demonstration booth showing different hardness quality levels. My tank is far from the hardness of what they sold. It will scratch, and they will add up. No matter how careful you are, even acrylic safe pads over time will cause a slight fog. A small grain of sand stuck to the pad will cause an actually visible scratch.

  • ( DO NOT ATTEMPT to use magnetic cleaners on this tank, I tried three different ones, ranging from $20 – $120. They ALL caused scratches to the tank. It is too soft for them.)

  • 4. Pre-filter: Quickly clogs, and becomes a detritus trap. Not easy to clean and replacements are too expensive to just throw away every time. Also after 1-2 washes, they become far less effective, and stuff sneaks past. (I tested with a second filter bad placed where the drip plate is. It is noticeable and shocking how much gets past in 24 hours.

  • 5. Bio-balls /Drip plate: Bio balls are no longer a thing in the aquarium world, almost everyone uses Ceramic media now. After making the switch I saw a HUGE difference in my tank. The drip plate however is pretty good and you can place searched bags of carbon phosguard, or purge on it. (after you upgrade the pump, of course, they work better as more flow)

  • 6. Light Is Useless: I replaced it immediately. Far too weak for even a freshwater tank. Let alone a reef tank. Marine and Reef 2.0 is the best light to get for this tank $150-180 on amazon and most places. get the 36in-48in.

  • 7. You will still need a wavemaker for this tank for saltwater or saltwater reef.

  • 8. Must have a heater, and possibly chiller depending on climate.

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