The ultimate temp/SG for SPS

[miniwhinny]

Sorry I haven't just done a search on this but the search feature was busy !

I'm in the first month of a SPS tank. Can someone please tell me the ultimate temp and SG based on experience. I know there's a range but where's the best part of the range.

Thank you:)

[sigster500]

I dont think there is a ultimate temp or sg as long as they stay stable SG shoudnt flux much if you have a top up system.
Try and stick with 1026 sg and around 80f if you constantly abuse SPS with 77- 84 they wont thank you for it so a stable ish 3 degree swing is fine but obviously themore stable the better just dont abuse it to an extent

[Mykel Obvious]

Here's an article on that subject:
http://www.reefland.com/rho/1105/reefc7.php

I run 34-36 ppt on average and 81-84F with occasional spike to 85-86F with no worries... there is a natural "growth zone" in SPS at about 84F

[fijiblue]

Here is an abstract taken from a test done in Japan. Keep in mind one area and one type of acropora, but it should give you an idea. HTH. Im pretty sure I read somewhere that sps shut down photosynthesis around 85°.

Summary

Physiological properties of the temperate hermatypic coral Acroporapruinosa Brook with symbiotic algae (zooxanthellae) on the southerncoast of the Izu Peninsula, Shizuoka Prefecture, central Japan,were compared between summer and winter. Photosynthesis and respirationrates of the coral with symbiotic zooxanthellae were measured insummer and winter under controlled temperatures and irradianceswith a differential gas-volumeter (Productmeter). Net photosyntheticrate under all irradiances was higher in winter than in summer at thelower range of temperature (12-20°C), while lower thanin summer at the higher range of temperature (20-30°C).The optimum temperature for net photosynthesis was apt to fall with the decrease of irradiance both in summer and winter, whereas itwas higher in summer than in winter under each irradiance. At 25/50/100 µmolphotons m-2 s-1, it was nearly the sea_watertemperature in each season. Dark respiration rate was higher inwinter than in summer, especially in the range from 20-30°C.In both seasons the optimum temperature for gross photosynthesiswas 28°C under 400 µmol photons m-2 s-1 andlowered with decreasing irradiance up to 22°C under 25 µmolphotons m-2 s-1 in summer, while 20°Cunder the same irradiance in winter. The optimum temperature forproduction/respiration (P/R) ratio was higherin summer than in winter under each irradiance. Results indicatedthat metabolism of coral and zooxanthellae is adapted to ambienttemperature condition under nearly natural irradiance in each season.

[miniwhinny]

Thank you all.

[miniwhinny]

In both seasons the optimum temperature for gross photosynthesiswas 28°C

- I'd have thought that was high. Glad I asked this question.

[chris4869]

28°C = 82.4°F

:D

[miniwhinny]

28°C = 82.4°F


yup, like I said I thought that was high. Liveaquaria recommends between 72 - 78 degrees. That's why I asked here on this forum what people themselves use. I've learned not to trust anything I read online lol.

[cl2ysta1]

we run ours between 80-84 with salinity at 1.022. We get amazing color and growth

[bradical]

78
1.026

[250G]

78.5
1.026

[KevinFJB]

80-82F
1.025

[Leonardo_]

80-81 F
35 promille