Apex dos failsafe

[Emon]

Good day everyone, I wanted to know if anyone has experience on how to program the apex so it doesn’t ever overdose ur tank. For example , I want to shutoff any dos head that is on longer than 5 seconds so, my tank won’t get overdosed . The reason being one time I turned on the dose by accident and it dosed 2000 ml of Alk , I never want that to happen again but, I am apex illiterate. Thanks for any input and have a great day

 

[CSJIII]

Good question and following. You can also failsafe to shut it off if ph goes over a certain level since the Alk will increase your PH.

 

[SuncrestReef]

Unfortunately this isn't possible if you're relying on the normal DOS scheduled intervals. When you tell the DOS to deliver a certain amount over a range of time and set it to AUTO, it automatically turns on and off the pump over that period of time, but from a programming standpoint it's always considered "On" even when the head isn't rotating. Because of that, you can't say "If ON > x" because that always would be true.

The basic rule with the DOS is to NEVER set its slider to ON. It should always be left at AUTO.

 

[Emon]

good Point suncrest, never thought of it like that and now I understand why it’s not possible. Also getting back to csj what other parameters can I use to shut off the dos if it doses to much calcium and mag?

 

[nagreen8]

https://www.reef2reef.com/ams/neptune-apex-programming-tutorials-part-2-timers.689/
not sure if this is what you're looking for...checkout part 2 in particular the when command.

 

[nagreen8]

I'm new to this so take what. I say with a grain of salt haha. suncerest knows best. not sure if that was out at the time this was going on.

 

[Waters]

As stated, you can monitor the PH levels and shut of the DOS based on that.