Doser Kalk PH droping Like a Rock

Today I got my 1.1 ml dosser. I am now dossing Kalk. I am dosing for 5 min every hour. After every dose I find my PH drop. This last time it went from 8.07 to 8.03. First it went from 8.09 to 8.07. I read that this was supposed to raise the PH. Neptune Apex PH Prob

I am dosing from a 2 liter bottle that is RO/DI with in Teaspoon of Kalk.

What am I doing wrong?

Thanks. Scott


90gal tank

 

Only thing i can think of is your alk, whats it ay both before and after dose,

 

alk before 12 after 14. ca before 450 after 500. Just shut off the doser. ph 8.00.

 

If your ph is above 8.0 and not dropping below 7.8 at night you really do not need to be dosing.

Your Ca is too high and I would for sure stop the kalk.

Your numbers look better than before you started the dosing, if it is not broken do not fix it, that is the best advice I can give.

Alk reflect the hardness if your water, it's ability to buffer and maintain a stable pH.

How many stony corals do you have, what is the utilization of your tank?

Do you have a magnesium level?

 

Oh and I would calibrate the prob if you have not already.

 

His tank has softy and lps, no sps, and one small clam about 3 inches.

 

PH prob has been calibrated. Magnesium is at 1500 it was at 1350.

Stone corals? 1 maybe 2. Not shure. going to try and attach a pic.

 

Love this link:

Reef Aquarium Water Parameters by Randy Holmes-Farley - Reefkeeping.com

I re-read part of it every time I post it.

Hopefully some of the chemistry gurus like Steve, m2434 or John.....Dingo, Hunter..... may chime in.

 

Do you think I should do a water change to bring the alk, ca, ma, down. I have the about 30gal of salt and about 40gal of RO/DI on hand.

 

Nice tank scottmwoods.

If the corals and fish do not looks stressed it's all good. I would however figure out what your pH swing between early am before the lights come on and at the end of the lighting period just to figure out the swing.