How To Set Up A Frag Tank

How To Set Up A Frag Tank

Once you have grown coral to the point where your tank may become a bit cluttered, you’re probably wanting to start a frag tank. Having said that, a frag tank isn’t too difficult and you don’t need to go big, in fact a 20 gallon tank is more than enough for a frag tank. In addition, a shallow tank is best, because they are easier to clean, and will have much better light penetration for growing coral, and is also easier for adding or removing frags.


Best Accessories for Frag Tank

As with your nano reef aquarium, proper water flow is essential in a frag tank, but you don’t need anything too extravagant, a regular power head like the Hydor Koralia will suffice, and it produces a natural broad flow, and is also reasonably priced. Heating your frag tank is basically the same as the general rule for heating your aquarium, typically 3 to 5 watts of power for every gallon of water. A good heater for a frag tank is the Cobalt Neo-Therm due to its slim design that can fit into tight spaces.

With frag tanks generally being shallow and are generally used as a temporary holding tank, there is no need for an expensive high powered lighting system to grow your coral. A simple T5 light fitting or an LED strip light will be suitable, like the AquaticLife Marquis, or the Current USA Orbit Marine, the Kessil A360, and Kessil A160 are also popular choices. Moreover, these are linkable, which is ideal if you want to expand, and they are very compact too.


Frag Tank Set Up Tips

That being said, while we have mentioned some good ways to get your frag tank set up and functioning properly, there are also a few additional things to take into consideration too. For example; are you going to be using your coral tank to go to swap meets with? If so, then you may want to consider setting up a proper overall plumbing system into your frag tank. In addition, this can help to cut down on the time spent doing it manually, and ensuring that your coral is ready when you need it to be.

In addition, when it comes to setting an entirely separate system  for your coral to thrive in, you will need to ensure that you have some of these additional extra parts, like a full Apex, a return pump, lights, heater, and a good circulation pump. Moreover, decide in advance if you are going to want to keep your system separate from your main setup, or are you going to be combining them side my side? Taking the time to research, which way is best for your own specific needs, will better help you when the time comes to purchasing these items.


In addition, there are some cons to be aware of as well in regards to setting up a frag tank, so while we have mentioned most of the positives, we also want to inform our readers for some things to watch out for with certain set ups too. That being said, when it comes to the water supply, while some would say they do it manually, it could also be a pain doing the entire process efficiently. Therefore, you might want to consider the proper plumbing to the current sump, which could help with the overall water stability. In addition, if you want the same parameters for your overall set up, just make certain that it can easily be turned off, and separate to qt something when necessary.

Furthermore, it might make is easier to keep your coral frag tank separate from your main setup, especially when you need to treat the coral, or add in new coral to the tank itself. Moreover, for those that are doing this set up in order to sell their frag off, it makes it easier if the tank is set up on its own plumping lines too. Keep in mind, that it might be better suited to set up two different frag tanks, but the con here is that it will cost a bit more in equipment costs to set up, and operate two separate frag tanks too.


Advantages Of A Frag Tank

However, on the positive side, if you were to set up two separate systems, and say one of them crashes on you, then at least you would not have lost everything. That said, this is extremely important to those who deal in high end corals. Another positive side to setting up two different coral frag tanks, is that it will help when it comes to testing out corals in different high lighting, and lower lighting to see which way the coral would benefit from better.


Keep in mind, that due to corals recovering from fragmentation and with your hands frequently in and out of the water, it is highly recommended that you do around a 20% water change weekly. In addition, running fresh activated carbon will also help your corals to become more stable, and you could even run a protein skimmer, due to the low organic waste levels, although this is not an essential step, but rather an optional one to incorporate with your coral. Moreover, by putting one or two Tang in the tank often it can help with cleaning up unwanted algae, detritus, and pests that will easily accumalate inside of a frag tank. In addition, always be sure to have good water flow, and check your PH levels regularly.



When it comes to setting up a frag tank, the many different choices out there to select from can easily be confusing to decide upon. However, we hope that some of our tips, and suggestions within this article here today can better help the consumer to now make a better purchasing informed decision for their own requirements. Finally, while these tips can help, we further suggest that the consumer spend a moment talking to professionals, who can further provide them with certain additional equipment they might need for their own set up to be completed properly for them with ease.


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