High alk

[EeyoreIsMySpiritAnimal]

Regardless, you need to determine how high the alk in your tap water is.

 

[Jekyl]

Yeah, but there is air so even though the bottom is at 1 ml, there is still air so the reagent only reaches I believe .8

No, the air is accounted for.

 

[Randy Holmes-Farley Verified Community Expert]

This thread details how to properly read a syringe. Any air should be ignored. Just look at the movement of the end of the plunger:

Reef Chemistry Question of the Day #161 Using a Syringe

Reef Chemistry Question of the Day #160 I have just drawn tank water into a syringe with a tip (shown below, including a blowup of the barrel). The blue coloration shows where the fluid is. When I started to draw fluid in, the tip and syringe were empty and the plunger was all the way in...

www.reef2reef.com

 

[bensoo00]

I was doing some reading and my live rock might be made of limestone. Is this possibly what is causing my alk to be high?

 

[bensoo00]

and for the test ill try it again tomorrow correctly and see what I get as the reading

 

[TokenReefer]

I was doing some reading and my live rock might be made of limestone.

Aquarium Chemistry: Calcite, Aragonite, Limestone, and More

It's been said a million times that aragonite helps buffer aquarium water, or helps maintain calcium concentrations, while other (carbonate) substrates do not. However, to the best of my knowledge this simply isn't true.

reefs.com

 

[Randy Holmes-Farley Verified Community Expert]

I was doing some reading and my live rock might be made of limestone. Is this possibly what is causing my alk to be high?

Nope.