Low Alk question.

Carz

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I have been reading 4.9 alk with my Hanna tester. According to the BRS calculator I needed 725ml of alk to raise my system up to 8.5. I have been dosing about 100ml per day for the past 3 day and testing daily. After 300ml I am only at 5.9 and just wondering if this is a normal for the alk to raise this slow. I only have a few small frags and a large 200+ head duncan in a 250 gallon system so nothing really sucking up the alk. Should I just keep adding the 100ml/day??
 

Coolcasino

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If you are positive that you are getting accurate test result that is the way you need to raise Alk. Slowly!
 

Propane

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If it were me I’d verify the result using another method.
 

dschuffert

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I would raise the dKH slowly. I am curious about what salt you are using and when the last water change was. Most salt mixes have a higher dKH than you are testing as part of their formula, which could raise your dKH level.
 

vetteguy53081

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add no more but take a water sample to a reputable LFS and have them test a water sample for you and verify. If that low, your calcium would too would be low and even Ph as alk is a stimulant with ph level. You would be seeing tissue loss, ph swings and bleaching of coral if that low.
 
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Carz

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went to the store today took the tester and water. Ended up being the Hanna Reagent being bad. Use by date was 5 months away, but I bought a new reagent and tested my water and their water to confirm. One big water change today and I am good. Hanna test equipment is really nice at times but with my MG tester and the reagent being bad 5 months early makes me rethink Hanna.
 

Tcook

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went to the store today took the tester and water. Ended up being the Hanna Reagent being bad. Use by date was 5 months away, but I bought a new reagent and tested my water and their water to confirm. One big water change today and I am good. Hanna test equipment is really nice at times but with my MG tester and the reagent being bad 5 months early makes me rethink Hanna.
What was the result? What did the lfs when they tested with their test? I got sick of the swings with the Hana alk tester and threw it away.
 

dadnjesse

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I have found with the Hanna Alkalinity Reagent once you open it it's only a matter of weeks before the test results start being off. I have thrown out many bottles still within expiration dates.
 

RRA

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I love my hanna meters, but I don't trust them truly. I will daily test with them to get a good idea, if ever something seems off ill break out another to confirm before I dose or change anything. They are great but to many variables make them not truly trustworthy in my eyes.
 

Tnops

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I’ve increased DKH by 1-2 DKH a day many times without problem. I’ve accidentally done +6 DKH overnight and everything except one plate coral was fine (even that recovered)
 

Propane

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Out of curiosity do you gently agitate the bottle before drawing your reagent?
 

rahger

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I have found with the Hanna Alkalinity Reagent once you open it it's only a matter of weeks before the test results start being off. I have thrown out many bottles still within expiration dates.
i don't remember where I saw it, or if it's true but allegedly keeping it in the fridge extends it life?
someone can correct me if I'm wrong though.

I have a trident and test with hanna when i change my reagents, always seems to be consistently +/- 0.2dkh.
 
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