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What could cause my corals to stop opening?


samuel88
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hi guys, about a few weeks ago i started adding seachem calcium and carbonate, as well as topic marin pro coral mineral (trace elements) to my 15 gallon tank. containing mostly LPSes and big zoa colony.

ever since the addition, my corals have been slowly opening smaller and smaller. coincidentally it seemed to start when i forgot to turn on the lights for one day.

so my question is, could the addition of the trace elements, calcium or carbonate be causing my corals to close?or could it be the one day when i didn't off the lights?

so far its the LPSes that are closing, but my zoa colony is showing brighter than normal colors. somehow the additives have benefited the zoa colony or maybe its just unaffected, but my LPSes don't seem to like it.

i have another 5 gallon fishtank, where all i added was the calcium and carbonate, i think i only added trace elements once, but the LPS in my 5 gallon are doing good.

another side note, i never feed both my tanks at all since day one, should i start feeding? there are no fishes in the 15 gallon. nitrates are around 5 - 10 ppm. calcium in my 15 gallon is only at 270 ppm.

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Bro 270 seems kinda low maybe boost higher ?

yeah it does, been dosing more often. hmmmm think i'll lay off the trace elements for a few weeks and see what happens. i'm thinking its either the trace elements or not feeding the corals that's causing this.

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yesterday due to some emergency i had to do a huge 50% plus water change.

after i did it, my acan began to open up again.

i guess it must be the trace elements or maybe calcium, and not the absence of feeding.

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