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Old 06/12/2018, 09:54 PM   #1
Bill_Moorman
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When do corals grow?

Something that I have been wondering for the past few nights:

When do most LPS corals grow? For example, do they grow most at night, during the day, or all around?

Iíve noticed my alk drops more overnight than during the day, which leads me to think they grow overnight but I am not sure.

Iíve done some googling but havenít found anything conclusive.


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Old 06/13/2018, 06:34 PM   #2
sirclintler
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Your alk shouldn't drop at night. Are you referring to PH? Coral cannot grow without light. The light feeds the zooxanthellae which in turn feeds your coral.


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Old 06/13/2018, 07:03 PM   #3
Daddi0
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I dont know if it helps but zooxanthalae are only active from about 1 hour after lights on and for approx. 8 hours. and not at all in the dark.


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Old 06/13/2018, 08:45 PM   #4
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I suppose I should clarify. I measure in the mornings, so from 6am to 6am, I drop .4 alk.




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Old 06/14/2018, 07:39 AM   #5
sirclintler
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Well you should not see it rise back up. A drop is a good thing it means your corals are using it to grow. To solve the drop add more alk but it is a fine line that you have to find. To much and you will raise your dkh to high, how much are you dosing now? Sneak up on it don't rush. You will know when you don't see a loss or gain and its where you want it . I keep mine at 8.3 i think the rule of thumb is between 8 and 11


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Old 06/14/2018, 07:45 AM   #6
Bill_Moorman
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I should further clarify lol

I understand the alk, mag and calcium parameters and how they are interrelated. I am seeing a stable drop each day of about .3 or .2 in alk and i manually dose two part.

Iím pretty anal about parameters. Here is my params log: https://docs.google.com/spreadsheets...PJvGsptMjON8qs

I set the tank up in January.





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