ph swing day 8.2 night 7.7

[h2o]

Is this normal ? how do i keep it stable

 

[morphiii]

What is your ALK, Ca and Mg?

What are you using to test your pH?

 

[h2o]

reef fanatic micro ph controller, ca 420 , mg 1200 alk 9

 

[morphiii]

Never used that ph controller before, so I don't know how accurate it is.

The Mg is a little low, try boosting it up to 1300 to 1350. That should stabilize it.

Drip Kalkwasser at night to keep the pH higher. Get some macroalgae and run a reverse photoperiod should also help.

 

[reefman]

ph high swing=low alk
7.7 is low. how r u maintaining ur ca/alk? r u dosing kalk at nite?

 

[h2o]

No kalk, I just use 2 part by brightwell aquatics

 

[reefman]

try raising alk and/or dosing kalk at nite, however bare in mind, ca,mg and alk need to b monitor since 1 affects the other,i.e. raising alk may lower ca n visa versa. mg also affect both. all 3 par affects ph. read up on the relations on these elements.

 

[h2o]

Thank you for the advice I will double check ca alk mg just needed to know what to look into.