Dose at night or all day long?

[Rakie]

I say dose non stop. Stability is nice, and with modern skimmers pH doesn't fall too much, typically. Julian Sprung doses alk every 10 minutes he's said.

 

[don_chuwish]

Fascinating read. I've been dosing ESV 2 part at night, Alk & Ca alternating hours.

Alk:
OSC 060:00/008:27/051:33 Then ON
If Time 11:09 to 19:59 Then OFF
If pH > 8.35 Then OFF

Ca:
OSC 000:00/008:27/111:33 Then ON
If Time 10:09 to 19:59 Then OFF

I haven't tried testing Alk at night vs during the day but will have to do that now. My biggest pH swings are 7.96 to 7.85.
I don't have a large SPS load but my large hammer & frogspawn colonies grow like crazy.
Interestingly, I notice pH mostly drops during the day (skimmer is off), with a bump up while supplemental T5s are on. Then it rises at night during dosing & skimmer on.

 

[pjh71867]

I don’t monitor PH but I dose 6 times a day every 4 hrs everything seems to be doing great. 50gal water volume

How much do you dose each time?