SPS Coral Frags
Hard corals are getting easier to keep due to improved technology and a better understanding of their requirements.
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LPS Coral Fags
We have a great range Some of the easier-to-keep Blastomussa, Candycane Coral Cynarina.Euphyllia - Hammer Coral, Galaxy Coral, and Frogspawn Favia. Favites.
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Zoa, Zoanthid Frags.
Saltwater zoanthid corals are small soft corals.Ranging in color from blue, red, yellow, pink and many incredible variations.
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Soft Coal Frags
Soft corals are some of the most attractive corals found in the world's oceans.
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Buy Quality Coral Frags UK For Your Marine Aquarium Delivered To Your Door Anywhere Within The United Kingdom.

We offer a large selection of ethically sourced and sustainable quality coral frags from round the world.

Each coral is handpicked and cared for to the very best standards making certain that any new editions to your marine aquarium are received in the best condition possible.

A coral farm is an aquaculture facility designed to propagate – or grow – live coral, providing a self-sustaining source of corals.

Aquaculture is the cultivation of aquatic organisms. Aquacultured species include a wide range of popular ornamental species, like corals, and are a viable alternative to wild harvested species.

Acclimatising your new corals is a important method to make sure they survive and thrive in your system. Click Here for more information.
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Which are the most important water parameters in a reef tank?

I would like to put focus onto the most important water parameters in the reef keeping hobby. Some of them can only be tested in laboratory, some of them can be tested by you.

Number 1: Temperature.

Corals can tolerate a little bit lower and higher temperatures, but they prefer temperatures between 24 and 26 °C. If you have a problem in your tank, check water temperature first.

Number 2: pH.

During the evening your show stopping sized Acropora colony looked just fine, but the next morning the tissue in the middle of the colony has stripped. What happened?
Probably the most common reason is that there was not enough water exchange (too low flow) in the center of the colony.
Through metabolism, the pH decreased in the low flow areas of the coral. In addition, if the pH of your aquarium water drops too low at night, this can also contribute to the same problem.
pH is definitely one of the Top 10 reef tank water parameters. At least, it should be tested once a week in the morning and in the evening. Usually in between AM and PM a fluctuation of 0,3 pH is often observed, but this should be minimised as much as possible. If the pH drops below 7.8 at night, something in your system needs to be optimised. A good pH to aim for is between 8.2 and 8.4.
What you can do to improve the pH of your tank:
  • Keep a stable Alkalinity KH of around 7.5 – 8 dkh.
  • Ventilate your rooms well.
  • Fresh air from outside for your skimmer´s air intake something similar or use an cheato  algae refugium.
  • Having good flow on the water surface helps with gaseous exchange too.

Number 3: KH or Alkalinity.

The alkalinity, carbonate hardness or KH is very important to buffer the pH of your tank. Carbonate (CO3) is also one of the major building blocks for corals to form their aragonite or calcite skeletons.
Problems when testing at home:
  • As the solutions become older they become less effective, that leads to wrong readings.
  • The procedure can easy change slightly/errors occur giving inaccurate results… always test more than once at one time.
  • The color perception of you and your eyes can lead to wrong readings, try to read in indirect sunlight.
  • Sometimes the test is bad from the beginning.

Number 4: Salinity.

Everybody is asking for optimal water parameters to achieve the best results in reefkeeping. I say mother Nature knows it best.
If you know your salinity, you can easily find out which element concentrations fit the best. In our Hobby, a salinity of 35 PSU (35 g salt per kg water) seems to be the standard that most of us are trying to achieve.

Number 5: Calcium.

As already mentioned before, the optimal calcium value depends on the salinity of your tank water. I recommend to test for calcium once per week.
Higher calcium (+ 20 mg/l) and KH (9 – 10) values can increase the growth rate of your corals when all the other parameters (light, flow, pH, nutrients, …) are fine. But if you have a ultra low nutrient system this can cause problems. In that case I recommend to keep the levels (KH and calcium) on a natural value or slightly reduced.

Number 6 and 7: Nitrate (NO3) and Phosphate (PO4).

Nitrate NO3 is the accumulative end product of the aerobic nitrogen metabolism process, which happens naturally within the aquarium from the waste products from fish etc.

(nitrification, NH4 -> NO2 -> NO3).

If there is no nitrate in your tank your corals might be nitrogen limitated.
Nitrogen limitation can lead to decreased growth rates, worse polyp-extension and coral coloration.
In that case you should add some nitrogen in form of ammonium, amino acids or planktonic food.
Add it at a minimum of every second or third day.
If algae growth occurs, stop dosing.
Regular phosphate tests are only capable to measure PO4. Low phosphate (PO4) contents does not say a lot about general phosphorous availability.
There are more phosphorous containing molecules and particles in your tank corals can feed on.  Remove GFO or similar media if phosphorous levels are low. If necessary add PO4 to your tank.
If nutrient levels are to high you will also get problems with your corals, algae growth cyano etc. Keep Nitrate below 20 mg/l and phosphorous below 40 µg/l (LPS, soft corals) and 20 µg/l (SPS).

Number 8: Iodine

To keep the iodine levels stable, you need to find out what consumption rate your tank has. ICP can help you on this.  Keep in mind that not only the organisms in your tank will deplete iodine, also activated carbon will bind serious amounts of iodine.
When you know the consumption rate, Iodine should be dosed on a daily base. I’d recommend to do it at least twice per week if you are lazy. Best source for iodine is IMO potassium iodide.  In my experience iodine levels < 300 µg/l will be tolerated well when only potassium iodide.

Number 9, 10 – Heavy metal pollutants.

Magnet holders for circulation pumps are one of the best inventions for reef tanks in the past years?
If you have elevated levels of either or mixture of Tin, Nickel and Cobalt, the source might be an corroding magnet or some metal in or around the system.

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