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Author Topic: KH Alkalinity Monitor  (Read 725 times)

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Offline Lazylivin

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Re: KH Alkalinity Monitor
« Reply #15 on: June 21, 2018, 01:47:06 »
I finally got it up and running today. (i think)

This evening I noticed the kh level was dropping fast after being fairly consistent today. I thought it was just another problem with the unit and almost blew it off. Curious I went down to test and surprisingly got matching results with sailfert. After a quick inspection  I found the alkalinity dosing tube crusted over a little bit.  After shipping some corals out tonight I added some replacement water back into the sump. I put too much in and the water level reached the alkalinity dosing tube outlet. It precipitated alkalinity back up into the tube and I think it may have affected the dosing rate. I fixed the issue at 11:45pm and it still is going down so not entirely sure if it was actually clogged or this dip in alk happens regularly at this time.  I was going to do a manual dose but decided to leave it and see what it looks like in the morning.

This unit is just a monitor, it canít dose anything like the kh guardian or alktatronic. My dosing is still done by the apex and set to deliver 11ml per hour regardless of the kh momitor alkalinity level

I havenít yet integrated this with APEX but I do plan to do that if I continue to get accurate results. Probrably just for alerting and charting at first. Possibly dosing in future if I can figure out how to do the coding to only delivery a pre-set maximum amount over 24 hour period




Offline Reeferntraining

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Re: KH Alkalinity Monitor
« Reply #16 on: June 21, 2018, 07:38:19 »
Brian, did you manually test throughout the day to see what your alk did in a 24hr period before you hooked this monitor up? What does the daily fluctuation in alk have to be before it starts damaging the corals? Iíve been wondering if thatís not what is causing my problems. Plan on doing alk tests every 2hrs this weekend.

Offline Lazylivin

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Re: KH Alkalinity Monitor
« Reply #17 on: June 21, 2018, 20:58:46 »
No I never tested like this. Once a day was most often and always around similar time of day. It will be instresting to learn about alk consumption and what affects it. Here is graph now. I bumped up alk by 20% this morning at 9am. I ran out of mag, calcium which probrably invalidates the results to an extent. On a plus the monitor is working good and results are matching Hannah and sailfert. Looks like I may have the bugs worked out. Knocking on wood.





Offline erky

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Re: KH Alkalinity Monitor
« Reply #18 on: June 22, 2018, 08:13:57 »
quite the swing there brian, what is your plan to stop the 1+dkh a day fluctuation?

Offline Lazylivin

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Re: KH Alkalinity Monitor
« Reply #19 on: June 22, 2018, 12:53:01 »
At some point I will change dosing times/amounts to reduce swing but for now observe and learn for a little bit. Then tweak observe and tweak so more. I wonder how bad swings were when I had display tank plumbed in and consumption was more then double what it is now. I am surprised to see consumption go up after lights are out. Then around 4am it goes down. At least that is trend now but not enough data yet to know if that is anomaly
Lights run 13:00 - 21:00


Offline erky

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Re: KH Alkalinity Monitor
« Reply #20 on: June 22, 2018, 13:08:15 »
what are the other columns in that shot?

Offline Lazylivin

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Re: KH Alkalinity Monitor
« Reply #21 on: June 22, 2018, 13:34:15 »
They are data elements specific to the KH monitor and KH Guardian filter maintenance, dosing etc... All that is applicable here is the prefix column (date/time) and suffix column (KH)


Offline Lazylivin

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Re: KH Alkalinity Monitor
« Reply #22 on: June 27, 2018, 23:49:50 »
Finally mine is fixed and running properly. They released a firmware that fixed the problem.
Since it is working now I am enjoying looking at the numbers and hypothesising. Is that a word?  Anyway; consistently after the lights go out (9pm) the consumption of alkalinity goes up shown by a decrease in dkh level. Then 4am consumption slows and dkh level begins to rise. Then at 9am consumption is steady until 9pm when the pattern starts again.  Itís probably too early to know if it will continue like this but to interesting not to share.


9am-9pm steady consumption (consuming 12ml alkalinity per hour)
9pm-4am increased consumption (consuming greater than 12ml per hour)
4am-9am decreases consumption (consuming less than 12ml per hour)

Note: I have not adjusted how much pumps dose per hour. Regardless of system dkh level dosing 12ml per hour.


Offline Reeferntraining

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Re: KH Alkalinity Monitor
« Reply #23 on: June 28, 2018, 11:16:57 »
It would be really interesting if you had your pH numbers that coincide with your alk tests.

Offline Lazylivin

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Re: KH Alkalinity Monitor
« Reply #24 on: June 28, 2018, 13:39:21 »
I like your thought process and have interest in that as well. I will do a graph sometime to show both PH and KH together. I need to get my PH probe calibrated first


Offline Lazylivin

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Re: KH Alkalinity Monitor
« Reply #25 on: July 13, 2018, 19:31:55 »
It has been running maintenance free and accurate for past 3 weeks. I got it hooked up to the apex today so I should be able to get some nice ph/dkh graphs after a week. Here is a built in graph from kh monitor


Offline Lazylivin

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Re: KH Alkalinity Monitor
« Reply #26 on: Today at 14:18:16 »
Here ya go Jesse. When PH is up, Alk consumption is lower. ph rises with lights on however alk consumption is higher when lights go off. The only way to test ph affect on alk consumption is to artificially raise ph using a scrubber when lights are off and see if overall alk consumption for the day is higher then days without the scrubber. I think we already know the answer is yes however I am not sure it is a good thing since the ocean ph is much lower at night then the day. So that is a natural swing that probrably is important to coral in some way.


 

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