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Old 09/13/2018, 05:09 PM   #1
shadow64
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alk & cal

Im missing something here . i need professional help!!As per picture all tests were done every day . alk is high .One question if i only dosed calcium how come next day calcium was lower .Same thing next test. Did my 90 gallon mixes tank use that much calcium in 1 day . Just dont want to kill anything. I use I/o reef crystals ,and was not keeping the main 3 elements were i wanted.. Using brs alk and cal on sites like http://reef.diesyst.com/chemcalc/chemcalc.html
do i use randy's recipe 1 ? i believe so
And does running carbon affect any of this?????
thanks hope pic uploaded if not


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Old 09/13/2018, 10:36 PM   #2
bertoni
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Running carbon generally won't affect those levels any appreciable amount. If the carbon is becoming coating with white rock and turning solid, there might be something of an issue there.

Is the tank getting anything in the way of pH buffers or tap water? Those are the more common sources of alkalinity.

All that said, those numbers are fairly close. Which calcium kit are you using? If it only has 25 ppm resolution, the calcium numbers actually are very close. I might dose the level up to 400 ppm. I'd do that in two shots, and I'd measure a few minutes after dosing, to make sure that the dose is doing what you expect. There's always some chance of a bit of an error in mixing the solutions.


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Old 09/14/2018, 04:19 AM   #3
shadow64
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no ph buffers /ro-di water/ brs calcium .when i dose cal do i dose alk at same time ? going by what someone had told me ..


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Old 09/14/2018, 08:15 AM   #4
mcgyvr
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Reef Crystals has high alk intended for heavily stocked coral tanks with decent daily consumption..
Decide where you want to keep your levels and dose only whats needed to maintain them.. Plain and simple.


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Old 09/14/2018, 02:46 PM   #5
bertoni
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You can dose alkalinity and calcium at the same time (for most systems) or you can dose one or the other, depending on the tank's current levels. Usually, dosing equal amounts of both parts is appropriate, but when the levels get a bit off, dosing unequal amounts is fine.

I'd just dose up the calcium carefully, and perhaps get a second opinion on the test kits, if that's easy. We get a lot of reports of testing problems. The kits all can fail.


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Old 09/14/2018, 05:17 PM   #6
shadow64
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thanks for the info


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Old 09/15/2018, 09:46 PM   #7
bertoni
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You're welcome. Good luck!


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