Strontium helping zoanthids?

[ScubaSteve]

Calcareous corals can incorporate strontium into their skeletons, hence with the Sr levels will deplete over time.

Daniella, if you can, see if he can test some of your freshly mixed water before a water change. I'd be curious to know if the Sr levels are already low in your salt mix, which would give you consistently low readings. We might be able to pinpoint what is using it the most.

[mrhasan]

Originally Posted by ScubaSteve

Calcareous corals can incorporate strontium into their skeletons, hence with the Sr levels will deplete over time.

Daniella, if you can, see if he can test some of your freshly mixed water before a water change. I'd be curious to know if the Sr levels are already low in your salt mix, which would give you consistently low readings. We might be able to pinpoint what is using it the most.

+1. Many salts skip on proper levels of such elements. Maybe because of their expense? Or to keep the market of the trace elements alive?

[mrhasan]

Here's a nice article on strontium by none other than Dr. Randy

http://www.advancedaquarist.com/2003/11/chemistry

Looks like seawater actually has around 8ppm (not 12ppm) so Daniella's strontium is not very low (6ppm) but that 25% can make some big difference I guess. Did you test it after dosing? I looked into aquavitro salinity and H2ocean's salt mix analysis and they seem to guarantee strontium anywhere between 8 to 10ppm.

[daniella3d]

He's already done such test and only one seem to be quite low in strontium:

http://www.reefaction.com/nosforums/...em.php?id=1792

http://www.reefaction.com/nosforums/...em.php?id=1936

But it seem that even people using a salt with good amount of strontium might still be low in this element, thus the use of testing.

I am using IO Reef crystal salt wich has a concentration of strontium quite high with 12ppm and yet I am always low on that element.

Only the Royal Nature salt seem to be really low on strontium, all others seem to be fine and also the second batch of Royal nature he tested had much higher level of strontium near 10ppm.

http://www.reefaction.com/nosforums/...em.php?id=1763

Originally Posted by ScubaSteve

Calcareous corals can incorporate strontium into their skeletons, hence with the Sr levels will deplete over time.

Daniella, if you can, see if he can test some of your freshly mixed water before a water change. I'd be curious to know if the Sr levels are already low in your salt mix, which would give you consistently low readings. We might be able to pinpoint what is using it the most.