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billyocean

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So you see that daily swing as well with dosing on a 24 hour schedule?
Yes. The tank will consume more with higher ph. When I went out of town my dosing didn't keep up with my consumption because ph was higher with no people/animals here. Hence..my alk was low when I got back. Generally ph is higher during the day/lights on.
 

Kasrift

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Good morning everyone. Happy 4th weekend!

Got a question for everybody on dosing technique For Alk, Ca and Mag. Currently, I dose Alk between midnight and 05:00. I dose Ca over 24 hours and don’t have to dose Mag yet. My daily water change happens over 6 hour between 10:00 AM and 4:00 PM which adds more of the big three daily. I’m usually out of the house during that water change time and don't hear the noise.

Reason for the question. If i watch trident too closely, the Alk graph shows a constant swing throughout the 24 hour cycle of about 0.3. High in the morning and drops throughout the day. I assume that’s because I dose at night and it’s consumed throughout the day. Would it be better to put the Alk dosing on a 24 hour schedule? Would that help reduce the daily Alk swing? Or. Is it best to dose early so there is more available for use during the daylight hours for consumption?
I had made that assumption too, but I was on some thread with people that said all consumption occurs in lights out at a high rate as well (for SPS) which is why acros have PE naturally at lights out.

I dose All For Reef on a 24 hour with no changes for lights out.
 

StatelineReefer

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What is difference?
illusion hiding GIF
 

AKL1950

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Yes. The tank will consume more with higher ph. When I went out of town my dosing didn't keep up with my consumption because ph was higher with no people/animals here. Hence..my alk was low when I got back. Generally ph is higher during the day/lights on.

I had made that assumption too, but I was on some thread with people that said all consumption occurs in lights out at a high rate as well (for SPS) which is why acros have PE naturally at lights out.

I dose All For Reef on a 24 hour with no changes for lights out.
These both make since, but seem to contradict each other. Makes your head spin. Seems a 24 hour dosing schedule is the preferred method, so I’ll go with that. If I understand this right, that, plus the auto WC will give stable Alk input and the swings I see then should be in relationship to PH and consumption. Does that sound correct?
 

billyocean

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These both make since, but seem to contradict each other. Makes your head spin. Seems a 24 hour dosing schedule is the preferred method, so I’ll go with that. If I understand this right, that, plus the auto WC will give stable Alk input and the swings I see then should be in relationship to PH and consumption. Does that sound correct?
I would think consumption is higher in daytime because.....well...corals can't grow without light. It's not to say they don't consume at night but daytime would logically be more
 

Kasrift

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I would think consumption is higher in daytime because.....well...corals can't grow without light. It's not to say they don't consume at night but daytime would logically be more
Yes and no. I think it is confirmation bias as to why we believe that. Keep in mind corals are animals in the cnidarians like jellyfish and not plants. Like I mentioned, it was on a thread with some way smarter reefers than myself.

I think there is an inverse relationship, xozanthelle are photosynthetic but gather energy during the day and may convert that to growth at night. Most things do this, we actually grow more during sleep than daytime activities, plants put energy into production at night after gathering light (I know I said they aren't plants).

I also think this is why people that run refugiums on opposite light schedules or get their ph bumped at night see more coral growth.
 

ryshark

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Yes and no. I think it is confirmation bias as to why we believe that. Keep in mind corals are animals in the cnidarians like jellyfish and not plants. Like I mentioned, it was on a thread with some way smarter reefers than myself.
I also think this is why people that run refugiums on opposite light schedules or get their ph bumped at night see more coral growth.
Or maybe because the PH is more stable, overall higher and doesn't dip so much at night. It would be interesting to see someone who did alk testing every hour for a couple days in a row to see if there is more consumption at day, night or the same. Did anyone have record of this in that thread?
 

AKL1950

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I would think consumption is higher in daytime because.....well...corals can't grow without light. It's not to say they don't consume at night but daytime would logically be more

Yes and no. I think it is confirmation bias as to why we believe that. Keep in mind corals are animals in the cnidarians like jellyfish and not plants. Like I mentioned, it was on a thread with some way smarter reefers than myself.

I think there is an inverse relationship, xozanthelle are photosynthetic but gather energy during the day and may convert that to growth at night. Most things do this, we actually grow more during sleep than daytime activities, plants put energy into production at night after gathering light (I know I said they aren't plants).

I also think this is why people that run refugiums on opposite light schedules or get their ph bumped at night see more coral growth.
Heads or Tails? I think I would lean toward the gather energy in the daytime and convert it to growth at night. As @Kasrift said, that’s what most living creatures do. Except for us humans. We seem to eat all day and drink all night. At least, that’s what I did. :p
 

Joe462

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Yes and no. I think it is confirmation bias as to why we believe that. Keep in mind corals are animals in the cnidarians like jellyfish and not plants. Like I mentioned, it was on a thread with some way smarter reefers than myself.

I think there is an inverse relationship, xozanthelle are photosynthetic but gather energy during the day and may convert that to growth at night. Most things do this, we actually grow more during sleep than daytime activities, plants put energy into production at night after gathering light (I know I said they aren't plants).

I also think this is why people that run refugiums on opposite light schedules or get their ph bumped at night see more coral growth.
My alk drops during the day when consumption is higher. High in the morning low in the evening. I think that provides evidence that consumption is higher in the day when the lights are on. I'm sure they still consume some during the night but at a lower rate.
 

AKL1950

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My alk drops during the day when consumption is higher. High in the morning low in the evening. I think that provides evidence that consumption is higher in the day when the lights are on. I'm sure they still consume some during the night but at a lower rate.
What’s your dosing schedule for Alk?
 

ryshark

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My alk drops during the day when consumption is higher. High in the morning low in the evening. I think that provides evidence that consumption is higher in the day when the lights are on. I'm sure they still consume some during the night but at a lower rate.
Is that based off an alk auto tester, like alkatronic, tirdent, etc? Or doing lots of manual tests
 

Yazannreef

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Consumption happens during the day. If you test out your alk in the evening it will be less than your same day morning alk. This is depends on your bioload and conditions.

Growth happens overnight when lights are out.
 
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