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Caulastrea: tab and advice on feeding and what to do if it doesn't open. Caulastra furcata, Caulastra curvata, Caulastra echinulata and tumina.
In the photo above you can see onecaulastrea furcatawith a specimen of Gobiodon okinawae (small yellow fish) peeking out among the coral colony.
When it comes tocaulastreaeach species has its owncardspecific. The taxonomic classification (taxonomy) of the genus is structured as follows:
- Kingdom, Animalia
- Phylum, Cnidaria
- Class, Anthozoa
- Subclass, hexacorallia
- Order, Scleractinia
- Family, Faviidae
- Genus, Caulastrea
The most common species on the market are:
- Caulastrea curved
- Caulastrea furcata
- Caulastrea echinulata
- Caulastrea tumida
Each species has its owncard even if the needs in terms of nutrition, brightness and water quality are very similar, as is the description.
Thecaulastreethey have a solid skeleton with various branches. The branches can be more or less long depending on the specimen, they generally have an irregular shape and end with a tissue from which the polyps protrude.
Caulastrea in marine aquarium
In nature they live in small colonies, generally prefer sandy substrates. They are very popular lps hard corals because they are easy to maintain in the aquarium. The blue and fluorescent green caulastrea, of the different species, are always easier to maintain than the red pigmented specimens which are even more difficult to find on the market.
Although traders generally state that corals do not need acclimatization, a 30-minute acclimatization period is always recommended as a precaution in order to adapt the specimen to the salinity conditions of your tank. Corals do not have thermal shock problems (like fish) but can be affected in the event of sudden fluctuations in the salinity and alkalinity of the water.
Therecaulastreadoes not present particular needs. Like allhard corals lpsit does not tolerate phosphates which must always be lower than 0.05 mg / l.
I advise you to keep the parameters of calcium and magnesium high, as you would for any other hard coral (calcium with values between 380 - 430 and magnesium with values of about 1350 mg / l). The calcium test and the magnesium test should be conducted at least once every 10 days. Like all hard corals, it requires strontium - usually strontium is already present in the salt water that you prepare at home or that you buy, so inquire at the source by reading the label or asking the retailer. Ideal strontium levels are between 8 - 10 mg / l.
If you use homemade marine aquarium water prepared with Red Sea Coral Pro, you will not need to make additions because the strontium levels will be integrated with the classic water changes.
Caulastrea that does not open
If your caulastrea hasn't opened for several days, it is certainly sending you a sign of distress.
If the caulastrea it does not open, you can try to change two factors: light and water movement.
As for the light, you should put it in the lower part of the aquarium, in the introduction I told you that it lives on sandy bottoms, so in nature it does not receive much direct light. However, it should not be overshadowed (so do not place it in the shade of a rock).
Thecaulastreethey don't want intense water movement, so if you keep it close to the movement pump, it is normal that it will not open.
- Salinity: 1.023 - 1.025
- pH: 8 - 8.4
- Lighting: PAR 250 - 350+
- Water movement: WM 1 - 2
- Temperature: 23 - 28 ° C
- Power supply: photosynthetic / filter
- Natural habitat: sandy bottoms at variable depths (from 3 to 20 meters) with moderate or tenuous currents such as lagoons.
- Origin: Pacific Ocean (in particular, East Africa, Japan, South Australia, Malaysia).
Warnings: it is not stinging, it is safe for other corals and invertebrates.
It is a photosynthetic coral but its diet can be integrated with planktonic elements (phytoplankton and zooplankton).
If in the opening photo acaulastrea furcatawith two typical colors, this photo shows thecurved caulastreafluorescent green with everted polyps.
The price depends a lot on the period and the dealer. For example, in 2014 as well as in 2018, there were changes in coral imports from some parts of the Pacific Ocean so the prices of all corals have risen. Then small retailers tend to have higher prices than large chains but can offer more sought after colors or specimens. The price range goes from 40 euros upwards for colonies, small cuttings can be purchased for 20 - 30 euros.
Cutting and Caulastrea reproduction
Therereproductionof thishard coral lpsit is simple, as it can be done by cutting with extreme ease: for growth thecaulastreait needs a high kh and therefore I advise you to periodically check the levels of calcium carbonate present in the tank. A well-maintained tank must be able to offer thecaulastreaalso trace trace elements such as iodine, iron and molybdenum.
Phosphate levels for all lps stony corals should be below 20 ppm, although lps stony corals in practice tolerate even higher nitrate levels.
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