How NOT to to dose NOPOX

[five.five-six]

My Apex base unit died and I got a loaner replacement. i wrote a new script for the 1.1 ML BRS doser. Something like this, thought I have since deleted it:

DO NOT USE THIS

Fallback OFF
Set OFF
If Time 06:00 to 06:04 Then ON
If Time 18:00 to 18:04 Then ON

It was supposed to dose for 4 minutes at 6:00AM and 6:00PM but what it did was come on at 6:00AM and stay on until I noticed it had been on all day

So it ran from 6:00AM to 11:54AM when I noticed it. That’s 716 minutes at 1.1 Ml should be 785 Ml + 20 Ml to prime the hose from a 100Ml bottle

With only 100Ml left in the bottle, I can deduce that my BRS 1.1Ml/min pump actually 1.23Ml/min but that’s besides the point.

Looks like all the fish survived with 24 hr. a day ozone, daily skimmer cleaning, 10 micron filter sock daily cleaned, and daily fresh carbon . The SPS didn’t fare so well. Roughly 50% loss.

 

[Randy Holmes-Farley Verified Community Expert]

Sorry to hear that happened. :(

 

[djkms]

A good failsafe code for sensitive outlets like this would be to add a "when on" code.

Example:
When On > 005:00 Then OFF

This will force the tile from the auto position to the off position.

For further safety you can create a virtual outlet that will send you a notification if your NOPOX is on for over 4 minutes:

NoPox-Alarm

Set OFF
If Output NoPox = ON Then ON
Defer 004:10 Then ON
Min Time 999:00 Then ON

Then set a line in your alarm notification:
If Outlet NoPox-Alarm = ON Then ON