Apex and 2 part q

[Authentic]

I run my apex 2 part as follows
alk 11pm to 9 am
cal 12pm to 10 pm
9 min an hour
i was just wondering what others are doing and whether it is better to run them both in the same time period(staggered so the have time to get into the dt without calcifyng)?

 

[Randy Holmes-Farley]

That looks like a fine plan to me. I don't see any advantage to running them together.

 

[edsbeaker]

Here's my program. It's different from yours, as I run all three throughout the day, making sure that calcium and alk are not being dosed closely together. Alkalinity comes on at the top of every hour for 1 minute and 22 seconds. Calcium comes on once per hour on the half hour for 1 minute 37 seconds.
I also have mag which comes on every hour on the quarter hour for 32 seconds. I like doing it this way so the levels are consistent 24/7

Alkalinity
Fallback OFF
OSC 000:00/001:22/058:38 Then ON
If FeedA 000 Then OFF

Calcium
Fallback OFF
OSC 030:00/001:37/028:23 Then ON
If FeedA 000 Then OFF

Magnesium
Fallback OFF
OSC 015:00/000:32/044:28 Then ON
If FeedA 000 Then OFF

 

[Authentic]

i am starting to see a spike in my ph to 4.1-4.2 midday,this is a new phenomenon..thoughts?

 

[Randy Holmes-Farley]

You mean 8.41? That's fine. Up to 8.55 peak wouldn't concern me.

 

[Authentic]

Thanks Randy

 

[joeang]

I read that you should dose your cal and alk a few minutes after one stops. Then start
Start the other I dose my alk for 10 mins that equals 11 mils and right now I need 100 mils a day so I do that 10 times. And the same for my cal. But the timers are set when one stops 5 mins later the other one starts is this a good way or should I be doing something else. I also am running mine through the Apex controller.

 

[bertoni]

How long you need to wait between the different supplements varies depending on the flow rate of the system. For my 29g tanks without sumps, 10 seconds was enough. Dosing into a sump for a larger system might require a much longer wait.