Alk and calc very low tank 2

andys · Mar 18, 2016

ok here is tank 2 it is roughly 125 gal of water and the ALK is 7.0 and the Calc say 250. it didnt even register on my red sea test kit. i did test it with my Hanna checker and got 277
i have no apex on this yet. i need suggestions

Randy Holmes-Farley · Mar 18, 2016

What do you mean it didn't register? Low calcium is not a reason that calcium isn't detected with a titration kit.

Did you reach the color endpoint with a small amount of fluid added, or did you never reach the endpoint (which may mean calcium is high and you need to add more).

Many people have troubles with the Hanna calcium checker.

andys · Mar 18, 2016

Randy Holmes-Farley said:
What do you mean it didn't register? Low calcium is not a reason that calcium isn't detected with a titration kit.

Did you reach the color endpoint with a small amount of fluid added, or did you never reach the endpoint (which may mean calcium is high and you need to add more).

Many people have troubles with the Hanna calcium checker.

the lowest # on the calcium pro kit is 58 i wanna say i put in 55ml titrant

andys · Mar 19, 2016

OK i have the Calc up to 370 and just dosed another 25Ml of Calc. Alk is at 7.0 and dosed 40Ml of Alk. the one thing i don't know is how so i can retest ?

Randy Holmes-Farley · Mar 20, 2016

andys said:
OK i have the Calc up to 370 and just dosed another 25Ml of Calc. Alk is at 7.0 and dosed 40Ml of Alk. the one thing i don't know is how so i can retest ?

You mean how long before you can test?

As soon as it mixes in you can test. That might be just a few minutes in some tanks, but with extended sumps and refugia, it may take an hour or two.