Need help programing my UV Sterilizer on / off times

[Mzurlo]

hello, I have an over powered emperor aquatics 40 watt UV Sterilizer for my current tank of 100 gallon, planning to go bigger in a year. Can someone please help me. I only want the lamp to come on 4 hours a day max. I'd like to have it come on at 3am-4am / 9am-10am / 3pm-4pm / 9pm-10pm. I will just keep the pump running the whole time no problem. I don't know where to put the code. I've looked under different items in programming but don't know what one you use. Thanks for your time.

I was playing around with Fusion and found I could put it under Advanced does this code look right? also i was wondering about that extra 0 on line 7 001:00

1 Fallback OFF
2 Set OFF
3 If Time 03:00 to 04:00 Then ON
4 If Time 09:00 to 10:00 Then ON
5 If Time 15:00 to 16:00 Then ON
6 If Time 21:00 to 22:00 Then ON
7 If Tmp >79.0 Then OFF
8 Min Time 001:00 Then OFF

[RussM]

The time format in Min Time statements is a duration in MMM:SS. It can be up to 999:59. Hence the leading zero.

Your program is OK, but the If Time statements will actually turn ON the outlet for 61 minutes, not 60 minutes. This is explained here:

https://forum.neptunesystems.com/sho...ll=1#post97230

Also, you should use a Min Time duration of at least 30 minutes; just 1 minute is useless in this case. If the temp goes high, you’ll want to keep the UV off for a while - that’s what the Min Time does here.

[inks]

arent uvs designed to be on at all times/ why only 4 hours

[zombie]

arent uvs designed to be on at all times/ why only 4 hours

I don't know what the OP's thought was but many people I know that run UV don't run theirs 24 hours because it can have a detrimental effect on non-benthic copepods and normal nitrifying bacteria swells that happen after feeding. 12 is the most common I have seen.

You might be an engineer if...You have no life and can prove it mathematically.

[Mzurlo]

The time format in Min Time statements is a duration in MMM:SS. It can be up to 999:59. Hence the leading zero.

Your program is OK, but the If Time statements will actually turn ON the outlet for 61 minutes, not 60 minutes. This is explained here:

https://forum.neptunesystems.com/sho...ll=1#post97230

Also, you should use a Min Time duration of at least 30 minutes; just 1 minute is useless in this case. If the temp goes high, you’ll want to keep the UV off for a while - that’s what the Min Time does here.

Again thanks for the help, this is my new code

1 Fallback OFF
2 Set OFF
3 If Time 03:00 to 03:59 Then ON
4 If Time 09:00 to 09:59 Then ON
5 If Time 15:00 to 16:59 Then ON
6 If Time 21:00 to 21:59 Then ON
7 If Tmp >79.0 Then OFF
8 Min Time 0060:00 Then OFF

[Mzurlo]

arent uvs designed to be on at all times/ why only 4 hours

My UV is over powered for my tank, it's rated for a 260 gallon tank. and i'm the guy that buys for the future and only buys once. my tank is only a 100 gallon now. So i'm going to start with 4 hours and adjust from their.

- - - Updated - - -

I don't know what the OP's thought was but many people I know that run UV don't run theirs 24 hours because it can have a detrimental effect on non-benthic copepods and normal nitrifying bacteria swells that happen after feeding. 12 is the most common I have seen.

You might be an engineer if...You have no life and can prove it mathematically.

Thanks Zombie for your help with this.